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WBBSE Class 9 Life Science MCQ Questions Chapter 3.2A Respiration: Organ-Level Respiration

January 29, 2024 by Prasanna

Well structured WBBSE Class 9 Life Science MCQ Questions Chapter 3.2A Respiration: Organ-Level Respiration can serve as a valuable review tool before exams.

Respiration: Organ-Level Respiration Class 9 WBBSE MCQ Questions

Multiple Choice Questions :

Question 1.
Which feature is essential for a respiratory organ?
(A) It must have wide surface area
(B) It must be wet
(C) It must be well vascularised
(D) All of these
Answer:
(D) All of these

Question 2.
Respiratory organ of starfish is
(A) Tube feet
(B) Lungs
(C) Book lung
(D) Gills
Answer:
(A) Tube feet

Question 3.
The respiratory organ of herbs are-
(A) Stomata
(B) Stomata and lenticels
(C) Stomata and cuticle
(D) Cuticle
Answer:
(C) Stomata and cuticle

Question 4.
Halophytes respire with-
(A) Stomata
(B) Stomata and cuticle
(C) Stomata and pneumatophores
(D) Pneumatophores and cuticle
Answer:
(C) Stomata and pneumatophores

Question 5.
Pneumatophores collect air from the-
(A) Atmosphere
(B) Mud
(C) Saline water
(D) Moist soil
Answer:
(A) Atmosphere

Question 6.
The most efficient organ for aerial respiration in animals is-
(A) Skin
(B) Lungs
(C) Book lungs
(D) Trachea
Answer:
(B) Lungs

Question 7.
Blood plays no role in carrying respiratory gases in-
(A) Fishes
(B) Earthworms
(C) Cockroaches
(D) Molluscs
Answer:
(C) Cockroaches

Question 8.
Gills collect oxygen from water by-
(A) Diffusion
(B) Endosmosis
(C) Active transport
(D) Facilitated diffusion
Answer:
(A) Diffusion

Question 9.
Trachea of insects supply oxygen to-
(A) Haemolymph
(B) Body fluid
(C) Intercellular fluid
(D) Cells
Answer:
(C) Intercellular fluid

Question 10.
Other than fishes, gills are seen in-
(A) Aquatic insects
(B) Spiders
(C) Tadpoles
(D) All of these
Answer:
(C) Tadpoles

Question 11.
Air enters in the tracheal network of insects by-
(A) Stomata
(B) Tracheoles
(C) Plurites
(D) Spiracles
Answer:
(D) Spiracles

Question 12.
Elongated respiratory tube acts as an accessory respiratory organ in-
(A) Koi fish
(B) Magur fish
(C) Singhi fish
(D) Shol fish
Answer:
(C) Singhi fish

Question 13.
Pleural fluid is present in between the-
(A) Lung and visceral pleura
(B) Lung and parietal pleura
(C) Visceral and parietal pleura
(D) Alveoli
Answer:
(C) Visceral and parietal pleura

Question 14.
Total alveoli in two lungs of a healthy and normal human being ranges from-
(A) 10-20 crores
(B) 20-25 crores
(C) 30-50 crores
(D) 70-80 crores
Answer:
(C) 30-50 crores

Question 15.
Which statement is correct?
(A) In a normal human being, both lungs are of same volume.
(B) In human, right lung is smaller.
(C) In human, left lung is smaller with three lobes.
(D) In human, right lung is larger with three lobes.
Answer:
(D) In human, right lung is larger with three lobes.

Question 16.
In lungs, _____ takes part in the gaseous exchange.
(A) Bronchus
(B) Bronchiole
(C) Alveolus
(D) Trachea
Answer:
(C) Alveolus

Question 17.
The carcinogenic compound, that enters into the lungs during cigarette smoking, is-
(A) CO₂
(B) CO
(C) HCN
(D) Benzopyrine
Answer:
(D) Benzopyrine

Question 18.
Spiracles of cockroach are present on-
(A) Tergite
(B) Sternite
(C) Pleurite
(D) Pronotum
Answer:
(C) Pleurite

Question 19.
In which fish, accessory respiratory organs are found?
(A) Rohu
(B) Prawn
(C) Shark
(D) Magur
Answer:
(D) Magur

Question 20.
Haemocyanin pigment is found in _____.
(A) Prawn and cockroach
(B) Prawn and snail
(C) Snail and earthworm
(D) Cockroach and snail
Answer:
(B) Prawn and snail

Question 21.
Pigeons have ____ air sacs.
(A) 8
(B) 8 pairs
(C) 9
(D) 10 pairs
Answer:
(C) 9

Question 22.
An adult human being can normally breath ______ times in one minute.
(A) 100
(B) 10
(C) 14-18
(D) 20-25
Answer:
(C) 14-18

Question 23.
The copper-containing pigment which carries oxygen during respiration, is _____.
(A) Haemoerythrin
(B) Haemocyanin
(C) Haemoglobin
(D) Chlorocruonin
Answer:
(B) Haemocyanin

Question 24.
Which of the following is a respiratory muscle?
(A) Biceps
(B) Triceps
(C) External intercostal muscle
(D) Myocardium
Answer:
(C) External intercostal muscle

Question 25.
Ribcage of human is made up of _____ pairs of bones.
(A) 14
(B) 12
(C) 13
(D) 16
Answer:
(B) 12

Question 26.
The most efficient organs for respiration in plants are-
(A) Stomata
(B) Lenticels
(C) Pneumatophores
(D) Cuticular pores
Answer:
(A) Stomata

Fill in the blanks :

Whales respire through _____.
Respiration is a/an _____ process.
Limulus respire through _____.
The ____ is known as Adam’s apple.
During hibernation, animals respire through ____.
Spiders respire through ____.
In blood, oxygen is transported as ______.
_____ is the cartilaginous covering present at the entrance of the larynx.
Todpoles breath through external _____.

Answer:

Lungs
Anabolic
Bookgills
Larynx
Skin
Booklung
Oxyhaemoglobin
Epiglottis
Gills

State true or false :

A typical respiratory organ should not be moist.
Pneumatophores are called ‘breathing roots’, which grow against gravity.
Frogs show cutaneous respiration.
Gills are covered with bony plates, called cranium.
Each bronchus of lung ramifies reveral times, from finer to finest air tubules, called bronchioles.
Breathing involves two phases-inspiration and expiration.
During expiration diaphragm expands.
Smokers develop a chronic lung disease, called emphysema.
During inspiration, intercostal muscles relax to push the ribs downwards.
Tuberculosis is caused by Mycobacterium tuberculosis.

Answer:

False
True
True
False
True
True
True
True
False
True

Match the columns :

Question 1.

Left column	Right column
1. Stomata	A. Halophytes
2. Lenticel	B. Barks of trees
3. Pneumatophore	C. Photosynthesis
4. Chloroplast	D. Leaf surface
	E. Food storage

Answer:

Left column	Right column
1. Stomata	D. Leaf surface
2. Lenticel	B. Barks of trees
3. Pneumatophore	A. Halophytes
4. Chloroplast	C. Photosynthesis

Question 2.

Left column	Right column
1. Skin	A. Amoeba
2. Gills	B. Cockroach
3. Body surface	C. Toad
4. Trachea	D. Fish
	E. Human

Answer:

Left column	Right column
1. Skin	C. Toad
2. Gills	D. Fish
3. Body surface	A. Amoeba
4. Trachea	B. Cockroach

Question 3.

Left column	Right column
1. Labyrinth organ	A. Clarias (Magur)
2. Respiratory tube	B. Anabas (Koi)
3. Respiratory tree	C. Frog
4. Spiracles	D. Heteropneustes (Singhi)
	E. Cockroach

Answer:

Left column	Right column
1. Labyrinth organ	B. Anabas (Koi)
2. Respiratory tube	D. Heteropneustes (Singhi)
3. Respiratory tree	A. Clarias (Magur)
4. Spiracles	E. Cockroach

Question 4.

Left column	Right column
1. Double layered membrane	A. Alveoli
2. Tubular wind pipe	B. Bronchioles
3. Fine air tubules	C. Thylakoids
4. Balloon shaped sacs	D. Trachea
	E. Pleura

Answer:

Left column	Right column
1. Double layered membrane	E. Pleura
2. Tubular wind pipe	D. Trachea
3. Fine air tubules	B. Bronchioles
4. Balloon shaped sacs	A. Alveoli

WBBSE Class 9 Life Science MCQ Questions Chapter 3.1A Plant Physiology: Photosynthesis

January 30, 2024January 29, 2024 by Prasanna

Well structured WBBSE Class 9 Life Science MCQ Questions Chapter 3.1A Plant Physiology: Photosynthesis can serve as a valuable review tool before exams.

Plant Physiology: Photosynthesis Class 9 WBBSE MCQ Questions

Multiple Choice Questions & Answers

Question 1.
Which of the following is/are plant physiological process/processes?
A. Respiration
B. Transpiration
C. Photosynthesis
D. All of these
Answer:
D. All of these

Question 2.
Which of the following components is/are necessary for photosynthesis?
A. Light and chlorophyll
B. Carbon dioxide
C. Water
D. All of these
Answer:
D. All of these

Question 3.
The gas released during photosynthesis is- …………..
A. Oxygen
B. Carbon dioxide
C. Both A. and B.
D. None of these
Answer:
A. Oxygen

Question 4.
The type of tissue, which serves as the site of photosynthesis, is-…………..
A. Meristematic tissue
B. Mesophyll tissue
C. Epidermal tissue
D. Vascular tissue
Answer:
B. Mesophyll tissue

Question 5.
The main end product of photosynthesis is-…………..
A. Glucose
B. Starch
C. Fructose
D. Glycogen
Answer:
A. Glucose

Question 6.
During photosynthesis, terrestrial plants absorb this gas from atmosphere. Which gas is it?
A. H₂O
B. CO₂
C. O₂
D. None of these
Answer:
B. CO₂

Question 7.
Aquatic plants absorb CO₂ through-…………..
A. Stomata
B. Root hair
C. Body surface
D. Leaves
Answer:
C. Body surface

Question 8.
in plants, stomata help in-…………..
A. Absorption of CO₂ and O₂
B. Exchange of CO₂ and O₂ and release of extra water as vapour
C. Intake of CO₂ and release of extra water as vapour
D. None of these
Answer:
B. Exchange of CO₂ and O₂ and release of extra water as vapour

Question 9.
The cell organelle in plants, acting as the site of photosynthetic reactions, is-…………..
A. Chloroplast
B. Chromoplast
C. Leucoplast
D. Mitochondrion
Answer:
A. Chloroplast

Question 10.
in flowering green plants, photosynthesis occurs in-…………..
A. Leaves only
B. Leaves, sepals, green fruit skin and tender stems
C. Leaves, stems and roots
D. Leaves and tender stems
Answer:
B. Leaves, sepals, green fruit skin and tender stems

Question 11.
Select the correct statement-…………..
A. Light reactions of photosynthesis occur in the presence of sunlight.
B. Photosynthesis can take place only under sunlight.
C. Dark reaction is hindered in the presence of sunlight.
D. Glucose is produced as a by-product in light reaction.
Answer:
A. Light reactions of photosynthesis occur in the presence of sunlight.

Question 12.
The only metallic element present in chlorophyll is-…………..
A. Carbon
B. Copper
C. Iron
D. Magnesium
Answer:
D. Magnesium

Question 13.
Source of oxygen, released during photosynthesis, is-…………..
A. CO₂
B. H₂O
C. Both A. and B.
D. None of these
Answer:
B. H₂O

Question 14.
The colour of light preferable for maximum rate of photosynthesis, is-…………..
A. Green light
B. Blue light
C. Yellow light
D. Red light
Answer:
D. Red light

Question 15.
Photosynthesis occurs at its best under-…………..
A. High oxygen concentration
B. Low carbon dioxide concentration
C. High carbon dioxide concentration under red light
D. Low oxygen concentration under green light
Answer:
C. High carbon dioxide concentration under red light

Question 16.
During photosynthesis, phosphorylation occurs in -…………..
A. Light-dependent phase
B. Light-independent phase
C. Both A. and 3.
D. None of these
Answer:
A. Light-dependent phase

Question 17.
One of the end products of light-dependent phase is -…………..
A. NADP
B. FAD
C. ADP
D. ATP
Answer:
D. ATP

Question 18.
Which of the following is called the Hill reagent?
A. NADP
B. ATP
C. NAD
D. FAD
Answer:
A. NADP

Question 19.
Reactions of light-dependent phase occur in-…………..
A. Stroma of chloroplast
B. Grana of chloroplast
C. Inner membrane of chloroplast
D. Mitochondrial matrix
Answer:
B. Grana of chloroplast

Question 20.
Fill in the blank with the correct option.
________ +Pi → ATP
A. AMP
B. ADP
C. NADP
D. NAD
Answer:
B. ADP

Question 21.
Fill in the blank with the correct option.
H₂O → __________+oH^–
A. H₂
B. H
C. 2H
D. H⁺
Answer:
D. H⁺

Question 22.
Which of the following statements is correct?
A. Ionisation of water in photosynthesis needs no light.
B. Photophosphorylation is the only light-dependent reaction, taking place in photosynthesis.
C. Both hydrolysis and photophosphorylation involve chlorophyll.
D. Photophosphorylation needs chlorophyll but hydrolysis does not.
Answer:
C. Both hydrolysis and photophosphorylation involve chlorophyll.

Question 23.
Which of the following statements is incorrect?
A. ATP formation occurs during photosynthesis by photophosphorylation.
B. Hill reaction occurs in light-dependent phase of photosynthesis.
C. Carbon assimilation does not occur at all in presence of light.
D. Glucose formation is the last phase of photosynthesis.
Answer:
C. Carbon assimilation does not occur at all in presence of light.

Question 24.
The scientist who discovered the reaction pathway for the photolysis of water is-…………..
A. Robin Hill
B. M. Calvin
C. Blackman
D. C. Linnaeus
Answer:
A. Robin Hill

Question 25.
The first stable carbon compound produced during photosynthesis is -…………..
A. PGA
B. PGAld
C. Glucose
D. Starch
Answer:
A. PGA

Question 26.
What is the name of the following reaction?

A. Photophosphorylation
B. Photolysis of water
C. Carbon assimilation
D. Glucogenesis
Answer:
C. Carbon assimilation

Question 27.
Resynthesis of RuBP from PGA occurs during-…………..
A. Hill reaction
B. Glycolysis
C. Blackman reaction
D. Calvin cycle
Answer:
D. Calvin cycle

Question 28.
In photosynthesis, photolysis of water is popularly known as-…………..
A. Blackman reaction
B. Hill reaction
C. Z-scheme
D. None of these
Answer:
B. Hill reaction

Question 29.
Food synthesised during photosynthesis, is generally stored in plant tissue as-…………..
A. Glucose
B. Glycogen
C. Starch
D. Cellulose
Answer:
C. Starch

Question 30.
Which of the following is not a photosynthetic pigment?
A. Carotene
B. Phycobilin
C. Chlorophyll
D. Haemocyanin
Answer:
D. Haemocyanin

Question 31.
Photosynthesis is a-…………..
A. Chemical process
B. Mechanical process
C. Photochemical process
D. None of these
Answer:
C. Photochemical process

Question 32.
Out of the 7 colours of the visible spectrum, which two lights are the most effective for photosynthesis?
A. Red and blue
B. Green and red
C. Blue and green
D. Yellow and green
Answer:
A. Red and blue

Question 33.
The wavelength of red light of the visible spectrum ranges from-…………..
A. 430-470 nm
B. 650-760 nm
C. 580-650 nm
D. 480-570 nm
Answer:
B. 650-760 nm

Fill in the blanks

1. ………………. is the photosynthetic tissue of green plants.
2. Reactions of light-independent phase occur in ………………. of chloroplast.
3. Scientist ………………. proved that photosynthetic reactions occur in two phases.
4. …………….. is considered as the energy currency of the cells.
5. In plant cell, starch is stored in ……………..
6. Green plants absorb ……….. to synthesise glucose during photosynthesis.
7. …………….. is a cellular compound which reacts with atmospheric CO₂ to produce phosphoglyceric acid.
8. …………….. is the enzyme which is necessary for the synthesis of PGA in the light independent phase.
Answer:
1. Chlorenchyma
2. Stroma
3. Blackman
4. ATP
5. Leucoplast
6. Carbon dioxide
7. RuBP
8. RuBisCO

State True or False

1. Aquatic plants absorb CO₂ from water through root hair. — False
2. ATP stands for Adenosine Tri Phenol. — False
3. Blue-green algae like Nostoc, Anabaena etc. can synthesise their own food. — True
4. Ionisation of water is known as Blackman’s reaction. — False
5. NADP is an artificial Hill reagent. — False
6. Out of 12 PGAld molecules, only 2 take part in glucose synthesis. — True
7. RuBisCO is used in the light-dependent phase of photosynthesis. — False
8. Photosynthesis stops due to excessive heat from the sun. — True
9. Light-independent phase of photosynthesis is also known as Blackman’s reaction. — True

Match the columns

Left column	Right column
1. Light-dependent phase	A. ATP produced
2. Light- independent phase	B. Fructose produced
3. Photophosphorylation	C. PGA produced
4. Carbon assimilation	D. O₂, ATP, NADPH₂produced
	E. Glucose produced

Answer:
1-D; 2-E: 3-A; 4-C

Left column	Right column
1. Chlorophyll absent	A. Eugiena
2. Highest rate of photosynthesis	B. Orchid
3. Photosynthetic animal	C. Fungus
4. Velamen present	D. Moss
	E. Chlorella

Answer:
1-C; 2-E; 3-A; 4-B

WBBSE Class 9 Life Science MCQ Questions Chapter 2.4 Major Organs of Human Body and Their Function

January 29, 2024 by Prasanna

Well structured WBBSE Class 9 Life Science MCQ Questions Chapter 2.4 Major Organs of Human Body and Their Function can serve as a valuable review tool before exams.

Major Organs of Human Body and Their Function Class 9 WBBSE MCQ Questions

Multiple Choice Questions & Answers

Question 1.
Which is the largest organ of our body?
A. Liver
B. Intestine
C. Skin
D. Brain
Answer:
C. Skin

Question 2.
Select the correct statement-…………..
A. An organ is an assemblage of many tissues.
B. An organ is an assemblage of different tissues, performing a specific function of the body.
C. Any part of the body is called organ.
D. An organ is a body part present inside the body.
Answer:
B. An organ is an assemblage of different tissues, performing a specific function of the body.

Question 3.
The protective layer of human body that prevents the attack of different germs is- …………..
A. Composed of epithelium
B. Composed of connective tissue
C. Skin
D. Dermis
Answer:
C. Skin

Question 4.
The largest lymph gland in animal body, is the-…………..
A. Spleen
B. Liver
C. Pancreas
D. Stomach
Answer:
A. Spleen

Question 5.
The organ of human body responsible for partial digestion is-…………..
A. Liver
B. Stomach
C. Small intestine
D. Pancreas
Answer:
B. Stomach

Question 6.
The organ of human body secreting HCl is-…………..
A. Liver
B. Pancreas
C. Stomach
D. Kidney
Answer:
C. Stomach

Question 7.
The food matters inside the stomach become-…………..
A. Acidic
B. Basic
C. Neutral
D. Slightly alkaline
Answer:
A. Acidic

Question 6.
Pepsinogen is converted into pepsin within the-…………..
A. Liver
B. Duodenum
C. Stomach
D. Large intestine
Answer:
C. Stomach

Question 9.
The organ that produces a number of enzymes and hormones is -…………..
A. Heart
B. Liver
C. Brain
D. Pancreas
Answer:
D. Pancreas

Question 10.
The organs involved in secretion of pepsin and trypsin are-…………..
A. Liver and pancreas
B. Gastric glands and pancreas
C. Liver and stomach
D. Salivary gland and gall bladder
Answer:
B. Gastric glands and pancreas

Question 11.
The organ of human body, where digestion of protein starts is-…………..
A. Stomach
B. Duodenum
C. Jejunum
D. Buccal cavity
Answer:
A. Stomach

Question 12.
Bile, secreted from the liver is-
A. Alkaline
B. Acidic
C. Slightly acidic
D. Neutral
Answer:
A. Alkaline

Question 13.
The organ of human body involved in detoxification is -…………..
A. Stomach
B. Liver
C. Pancreas
D. Spleen
Answer:
B. Liver

Question 14.
Formation of urea is the function of………..
A. Liver
B. Kidney
C. Stomach
D. Small intestine
Answer:
A. Liver

Question 15.
The diaphragm is located below the………..
A. Kidneys
B. Stomach
C. Lungs
D. Spleen
Answer:
C. Lungs

Question 16.
The organ, helping in neutralisation of the acidic contents of the stomach is………..
A. Duodenum
B. Liver
C. Pancreas
D. Jejunum
Answer:
B. Liver

Question 17.
The organ responsible for absorption of fat is ………..
A. Stomach
B. Kidney
C. Pancreas
D. Liver
Answer:
D. Liver

Question 18.
……………. of human body acts as the ‘crematorium of RBS’
A. Lung
B. Kidney
C. Spleen
D. Rectum
Answer:
C. Spleen

Question 19.
Different plasma proteins are synthesised in………..
A. Kidney
B. Liver
C. Spleen
D. Heart
Answer:
B. Liver

Question 20.
Immunity of our body is controlled by………..
A. Stomach
B. Heart
C. Spleen
D. Brain
Answer:
C. Spleen

Question 21.
The organ which is related to insulin and trypsin………..
A. Liver
B. Stomach
C. Spleen
D. Pancreas
Answer:
D. Pancreas

Question 22.
Digestion of fat is related to ………..
A. Liver and stomach
B. Stomach, liver, pancreas and small intestine
C. Pancreas, stomach and small intestine
D. Liver, stomach and small intestine
Answer:
B. Stomach, liver, pancreas and small intestine

Question 23.
Exchange of oxygen and carbon dioxide between blood and air occurs in………..
A. Liver
B. Skin
C. Kidney
D. Lungs
Answer:
D. Lungs

Question 24.
Blood pressure is maintained by………..
A. Heart
B. Heart and lungs
C. Heart and spleen
D. Heart, lungs and kidney
Answer:
D. Heart, lungs and kidney

Question 25.
Coordination of different organs depends upon………..
A. Liver
B. Heart
C. Kidney
D. Brain
Answer:
D. Brain

Question 26.
Production and elimination of urea involve………..
A. Small intestine and skin
B. Liver and kidney
C. Liver and spleen
D. Spleen and kidney
Answer:
B. Liver and kidney

Question 27.
Reflex action of our body involves………..
A. Spinal cord
B. Skin
C. Skin and brain
D. None of these
Answer:
A. Spinal cord

Question 28.
Memory and intelligence is controlled by………..
A. Spinal cord
B. Nerves
C. Heart
D. Brain
Answer:
D. Brain

Question 29.
The sense of love and affection is controlled by………..
A. Spinal cord
B. Brain
C. Heart
D. Heart and brain
Answer:
B. Brain

Question 30.
This organ is located in a cavity called mediastinum. This is the………..
A. Lungs
B. Liver
C. Spleen
D. Heart
Answer:
D. Heart

Question 31.
Hormone testosterone is secreted from………..
A. Pancreas
B. Ovary
C. Testis
D. None of these
Answer:
C. Testis

Question 32.
Besides production of egg cells, ovary acts as a………..
A. Hormone gland
B. Balancing organ
C. Sensory organ
D. Food storing organ
Answer:
A. Hormone gland

Question 33.
The component, present in sweat, which attacks bacteria, is………..
A. Ribosome
B. Lysozyme
C. Mesosome
D. Lysosome
Answer:
B. Lysozyme

Question 34.
The process of formation of sperms is known as………..
A. Glycogenesis
B. Eugenesis
C. Gluconeogenesis
D. Spermatogenesis
Answer:
D. Spermatogenesis

Question 35.
Pericardium protects from friction.
A. Heart
B. Spleen
C. Intestine
D. Testis
Answer:
A. Heart

Question 36.
Brain is protected by a tri-layered membrane, which is known as………..
A. Perineurium
B. Pericardium
C. Epineurium
D. Meninges
Answer:
D. Meninges

Fill in the blanks

1. …………… is the membrane, lining the cavity of abdomen and covering the abdominal organs.
2. Outer covering of lung is known as ……………
3. Stomach helps in partial digestion of protein, by secreting ……………
4. Contraction of heart is known as ……………
5. There are …………… chambers in human heart.
6. Toxic wastes of human body are filtered out by ……………
7. The main organ of circulatory system is ……………
8. …………… is the protective covering of human brain.
9. The process of production of spermatozoa is known as ……………
Answer:
1. Peritonium
2. Pleura
3. Pepsin
4. Systole
5. Four
6. Kidney
7. Heart
8. Cranium
9. Spermatogenesis

State True or False

1. Sweat helps to kill bacteria. — True
2. The pigment which gives colour to the skin is melatonin. — False
3. Liver secretes bile juice. — True
4 Spleen is an organ, where formation and destruction of RBC occur. — True
5. All emotions are the sensory infomations towards the brain. — False
6. Human heart drives oxygenated blood from left ventricle to the body, through pulmonary circulation.– False
7. Kidney is held at the back wall of abdominal cavity. — True

Match the columns

Left column	Right column
1. Abdominal cavity	A. Pericardium
2. Heart	B. Periosteum
3. Kidney	C. Peritonium
4. Lung	D. Capsule
	E. Pleura

Answer:
1-C; 2-A; 3-D; 4-E

Left column	Right column
1. Insulin production	A. Adipose tissue
2. Storage of fat	B. Pancreas
3. Synthesis of blood cells	C. Heart
4. Systole and diastole	D. Liver
	E. Spleen

Answer:
1-B: 2-A: 3-E; 4-C

Left column	Right column
1. Stomach	A. ATP systhesis
2. Thymine	B. Lens shaped
3. Mitochondria	C. Blood transport
4. Companion cell	D. HCl secretion
	E. Pyrimidine

Answer:
1-D; 2-E; 3-A; 4-B

Left column	Right column
1. Testosterone	A. Ovary
2. Progesterone	B. Testis
3. Reflex action	C. Liver
4. Bile juice	D. Spinal cord
	E. Pancreas

Answer:
1-B: 2-A; 3-D; 4-C

WBBSE Class 9 Life Science MCQ Questions Chapter 3.2B Cellular Level Respiration

January 29, 2024January 29, 2024 by Prasanna

Well structured WBBSE Class 9 Life Science MCQ Questions Chapter 3.2B Cellular Level Respiration can serve as a valuable review tool before exams.

Cellular Level Respiration Class 9 WBBSE MCQ Questions

Multiple Choice Questions :

Question 1.
An example of anaerobic fungus, is-
(A) Chlorella
(B) Yeast
(C) Agaricus
(D) None of these
Answer:
(B) Yeast

Question 2.
Which phase of respiration directly involves atmospheric O₂ ?
(A) Glycolysis
(B) Krebs cycle
(C) Terminal respiration
(D) Krebs cycle and terminal respiration
Answer:
(C) Terminal respiration

Question 3.
Production of CO₂ occurs during-
(A) Glycolysis and Krebs cycle
(B) Terminal respiration
(C) Krebs cycle
(D) All of these
Answer:
(C) Krebs cycle

Question 4.
Which of the following is involved in anaerobic respiration?
(A) HNO₃
(B) N₂O
(C) NH₂
(D) NO₃
Answer:
(D) NO₃

Question 5.
One molecule of glucose breaks into molecules of pyruvic acid in glycolysis.
(A) 1
(B) 2
(C) 3
(D) More than 3
Answer:
(B) 2

Question 6.
EMP pathway is biochemically known as-
(A) Glycolysis
(B) Krebs cycle
(C) Terminal respiration
(D) Electromotive pressure
Answer:
(A) Glycolysis

Question 7.
The other name of terminal respiration is-
(A) EMP pathway
(B) ETS
(C) TCA cycle
(D) ATP
Answer:
(B) ETS

Question 8.
In anaerobic respiration, the terminal respiration path is
(A) Present
(B) Absent
(C) Long
(D) Short
Answer:
(D) Short

Question 9.
Terminal respiration occurs in the
(A) Inner membrane of mitochondria
(B) Cytoplasm
(C) Outer membrane of mitochondria
(D) Endoplasmic reticulum
Answer:
(A) Inner membrane of mitochondria

Question 10.
Which statement is incorrect?
(A) Krebs cycle is TCA cycle
(B) Glycolysis is known as ETS
(C) EMP path is Glycolysis path
(D) ETS is terminal respiration
Answer:
(B) Glycolysis is known as ETS

Question 11.
Which of the following is incorrect regarding respiration?
(A) Enzyme is not required during respiration
(B) Respiration occurs in living cells only
(C) Respiration occurs in the presence or absence of free oxygen
(D) None of these
Answer:
(A) Enzyme is not required during respiration

Question 12.
gram mole of glucose is equal to of glucose.
(A) 80 gm
(B) 280 gm
(C) 360 gm
(D) 180 gm
Answer:
(D) 180 gm

Question 13.
Which of the following is not a respiratory substrate?
(A) Protein
(B) Vitamin
(C) Carbohydrate
(D) Fat
Answer:
(B) Vitamin

Question 14.
The cell organelle in bacteria, where respiration occurs is
(A) Mitochondrion
(B) Chromatophore
(C) Mesosome
(D) Genophore
Answer:
(C) Mesosome

Fill in the blanks :

In respiration, about ___ of the free energy is entrapped in ATP as kinetic energy.
In aerobic respiration, 1 gram mole glucose is oxidised to liberate _____ of energy.
______ respiration results in muscle fatigue.
The source of heat energy, which is released during combustion of coal, is ____ energy.
_____ is also called controlled combustion.
_____ is the first compound of Krebs cycle.
The enzyme ATP-ase is present in the _______ of mitochondria.
Respiration is a/an ______ reaction.
______ is a fast and uncontrolled process.
Pyruvate is the end product of glycolysis which gets converted into _____.

Answer:

40%
686 kcal
Anaerobic
Solar
Respiration
Citrate
Oxysome
Exothermic
Combustion
Acetyl Co-A

State true or false :

ADP is popularly known as the energy currency’.
Respiration is a physico-chemical reaction.
Aerobic respiration occurs is presence of free molecular oxygen.
By complete oxidation, one mole of glucose generates 586 kcal heat.
Methanobacterium sp. is an anaerobic bacterium.
Fermentation occurs in yeast.
Bacteria named Lactobacillus lactis produce ethanol by the process of fermentation.
ATP are gained directly from glycolysis.
Krebs cycle occurs both in cytoplasm and mitochondria.
The reaction path of terminal transpiration is known as ETS.

Answer:

False
False
True
False
True
True
False
True
False
True

Match the columns :

Question 1.

Left column	Right column
1. Energy currency	A. Combustion
2. Bio-chemical reaction	B. Fermentation
3. Physico-chemical process	C. Breathing
4. Oxygen-free process	D. Respiration
	E. ATP

Answer:

Left column	Right column
1. Energy currency	E. ATP
2. Bio-chemical reaction	D. Respiration
3. Physico-chemical process	A. Combustion
4. Oxygen-free process	B. Fermentation

Question 2.

Left column	Right column
1. Lactic acid fermentation	A. 50 kcal / mole
2. Aerobic respiration	B. 36 kcal / mole
3. Acetic acid fermentation	C. 686 kcal / mole
4. Anaerobic respiration	D. 116 kcal / mole
	E. 300 kcal / mole

Answer:

Left column	Right column
1. Lactic acid fermentation	B. 36 kcal / mole
2. Aerobic respiration	C. 686 kcal / mole
3. Acetic acid fermentation	D. 116 kcal / mole
4. Anaerobic respiration	A. 50 kcal / mole

Question 3.

Left column	Right column
1. Site of glycolysis	A. TCA cycle
2. Other name of Krebs cycle	B. Mitochondria
3. Other name of glycolysis	C. Cytoplasm
4. Site of Krebs cycle	D. Plastid
	E. EMP Pathway

Answer:

Left column	Right column
1. Site of glycolysis	C. Cytoplasm
2. Other name of Krebs cycle	A. TCA cycle
3. Other name of glycolysis	E. EMP Pathway
4. Site of Krebs cycle	B. Mitochondria

Question 4.

Left column	Right column
1. End product of glycolysis	A. Ethanol, Lactic acid
2. By-product of Krebs cycle	B. Glucose
3. End product of fermentation	C. NADH₂, FADH₂
4. End product of anaerobic respiration	D. Pyruvate
	E. Inorganic compounds

Answer:

Left column	Right column
1. End product of glycolysis	D. Pyruvate
2. By-product of Krebs cycle	C. NADH₂, FADH₂
3. End product of fermentation	A. Ethanol, Lactic acid
4. End product of anaerobic respiration	E. Inorganic compounds

WBBSE Class 9 Life Science MCQ Questions Chapter 2.3B Tissue: Animal Tissue and its Distribution

June 11, 2024January 29, 2024 by Prasanna

Well structured WBBSE Class 9 Life Science MCQ Questions Chapter 2.3B Tissue: Animal Tissue and its Distribution can serve as a valuable review tool before exams.

Tissue: Animal Tissue and its Distribution Class 9 WBBSE MCQ Questions

Multiple Choice Questions & Answers

Question 1.
Protection is the main function of ……….
A. Epithelial tissue
B. Muscular tissue
C. Nervous tissue
D. None of these
Answer:
A. Epithelial tissue

Question 2.
Inner lining of blood vessels are made up of……….
A. Muscular tissue
B. Epithelial tissue
C. Connective tissue
D. None of these
Answer:
D. None of these

Question 3.
Bone is a ……….
A. Specialised connective tissue
B. Weight carrying tissue
C. Very high density tissue
D. All of these
Answer:
D. All of these

Question 4.
Histology is the study of……….
A. Cells
B. Bones and muscles
C. Blood
D. Tissues
Answer:
D. Tissues

Question 5.
Similarity between areolar and adipose tissue is……….
A. Both provide protection
B. Both are connective tissues
C. Both help in coordination
D. All of these
Answer:
B. Both are connective tissues

Question 6.
Animal body is structurally much more complex compared to that of plants, because……….
A. Animals can move
B. Animals can feed on others
C. Animals have well differentiated organs and organ systems
D. Animals can survive in air, earth and water
Answer:
C. Animals have well differentiated organs and organ systems

Question 7.
Haversian canal is present in……….
A. Bones
B. Blood vessels
C. Muscles
D. All of these
Answer:
A. Bones

Question 8.
Blood is a type of……….
A. Epithelial tissue.
B. Connective tissue
C. Muscular tissue
D. Nervous tissue
Answer:
B. Connective tissue

Question 9.
Bone is a……….
A. Dead tissue
B. Modified muscular tissue
C. Solid adipose tissue
D. Solid connective tissue
Answer:
D. Solid connective tissue

Question 10.
Which tissue is called the coordinating tissue?
A. Epithelial tissue
B. Muscle tissue
C. Nervous tissue
D. Blood
Answer:
C. Nervous tissue

Question 11.
Which of the following is a conducting tissue?
A. Muscle tissue
B. Bone tissue
C. Adipose tissue
D. Blood
Answer:
D. Blood

Question 12.
Which of the following tissues has no role in the protection of animal body?
A. Blood
B. Epithelial tissue
C. Nerve tissue
D. All of these
Answer:
C. Nerve tissue

Question 13.
The walls of thick blood vessels are made up of……….
A. Epithelial tissue and muscular tissue
B. Nervous tissue and epithelial tissue
C. Only muscular tissue
D. All of these
Answer:
A. Epithelial tissue and muscular tissue

Question 14.
Which tissue acts as the shock absorber in our body?
A. Epithelial tissues
B. Bones
C. Muscles
D. Adipose tissues
Answer:
D. Adipose tissues

Question 15.
Epithelium of which region is involved in gaseous exchange?
A. Trachea
B. Bronchus
C. Bronchiole
D. Alveolus
Answer:
D. Alveolus

Question 16.
Which tissue takes part in the production of digestive enzymes?
A. Muscle tissue
B. Nervous tissue
C. Squamous epithelium
D. Glandular epithelium
Answer:
D. Glandular epithelium

Question 17.
Which of the following tissues may have ciliated lining?
A. Muscular tissue
B. Epithelial tissue
C. Connective tissue
D. Nervous tissue
Answer:
B. Epithelial tissue

Question 18.
Movement of different body parts involves……….
A. Muscular tissue
B. Nerves
C. Both A. and B.
D. None of these
Answer:
D. None of these

Question 19.
Involuntary muscles are seen in……….
A. Stomach
B. Urinary bladder
C. Walls of blood vessels
D. All of these
Answer:
D. All of these

Question 20.
Neurons are held or surrounded by……….
A. Acellular matrix
B. Basement membrane
C. Plasma
D. Neuroglia
Answer:
D. Neuroglia

Question 21.
Cytoplasm inside axon is called……….
A. Sarcoplasm
B. Axoplasm
C. Tonoplasm
D. None of these
Answer:
B. Axoplasm

Question 22.
Voluntary movement of our limbs involves……….
A. Only muscles
B. Muscles and bones only
C. Bones and nerves only
D. Muscles, bones and nerves
Answer:
D. Muscles, bones and nerves

Question 23.
Nucleated cells found in neurolemma are……….
A. Nissl granules
B. Plasma cells
C. Cell body
D. Schwann cells
Answer:
D. Schwann cells

Question 24.
Sarcolemma is the……….
A. Cell membrane of nerve cells
B. Cytoplasm of muscle cells
C. Cell membrane of muscle cells
D. Cytoplasm of nerve cells
Answer:
C. Cell membrane of muscle cells

Question 25.
A tissue with higher volume of inter-celiular matrix than cells, is……….
A. Epithelial tissue
B. Connective tissue
C. Muscle tissue
D. Nervous tissue
Answer:
B. Connective tissue

Question 26.
Celis with many projections is the common feature of……….
A. Neurons
B. Muscle cells
C. Epithelial cells
D. Blood cells
Answer:
A. Neurons

Question 27.
Our body movement is controlled by……….
A. Cardiac muscles
B. Involuntary muscles
C. Voluntary muscles
D. All of these
Answer:
C. Voluntary muscles

Question 28.
Which of the following tissues show contraction and expansion from the start to the end of our life?
A. Involuntary muscles
B. Voluntary muscles
C. Cardiac muscles
D. Neurons
Answer:
C. Cardiac muscles

Question 29.
Receiving external stimuli is the function of………………..
A. Nerves
B. Muscles
C. Epithelium
D. None of these
Answer:
A. Nerves

Question 30.
Intercalated discs are found in ……….
A. Skeletal muscle
B. Smooth muscle
C. Both A. and B.
D. Cardiac muscle
Answer:
D. Cardiac muscle

Question 31.
The animal tissue which stores fat, is……….
A. Blood
B. Areolar tissue
C. Muscle tissue
D. Adipose tissue
Answer:
D. Adipose tissue

Question 32.
Contractile proteins are seen in……….
A. Only in muscle tissues
B. Only in connective tissues
C All connective tissues and muscle tissues
D. Only in epithelial tissues
Answer:
A. Only in muscle tissues

Question 33.
Cytoplasm of muscle cells is called……….
A. Sarcomere
B. Sarcoplasm
C. Neuroplasm
D. Neuroglia
Answer:
B. Sarcoplasm

Question 34.
Which of the following is a part of a nerve cell?
A. Sarcolemma
B. Node of Ranvier
C. Myofibrils
D. Myofilaments
Answer:
B. Node of Ranvier

Question 35.
Actin and myosin are components of……….
A. Nerve
B. Blood
C. Muscle
D. Bone
Answer:
C. Muscle

Question 36.
Axon and dendron are involved in……….
A. Muscle contraction
B. Neural transport
C. Nutrient transport
D. Both A and B
Answer:
D. Both A and B

Question 37.
Syncytial cells are typically seen in……….
A. Voluntary muscle fibres
B. Involuntary muscle fibres
C. Cardiac muscle fibres
D. Neurons
Answer:
A. Voluntary muscle fibres

Question 38.
Schwann cell is related to……….
A. Axon
B. Dendron
C. Cell body
D. Muscle
Answer:
A. Axon

Question 39.
Cartilage is present in……….
A. Teeth
B. Cranium
C. Nail
D. Knee
Answer:
D. Knee

Question 40.
The tissue, which does not have direct blood supply is……….
A. Epithelial tissue
B. Nervous tissue
C. Muscular tissue
D. All of these
Answer:
A. Epithelial tissue

Question 41.
The percentage of plasma in blood is about……….
A. 45 %
B. 49 %
C. 65 %
D. 55 %
Answer:
D. 55 %

Question 42.
The inner lining of our mouth is made up of ……….
A. Blood and muscle
B. Epithelial tissue
C. Blood cells
D. All of these
Answer:
B. Epithelial tissue

Question 43.
The tissue that supplies food to all other tissues of our body is……….
A. Muscles
B. Blood
C. Nerves
D. All of these
Answer:
B. Blood

Question 44.
End brush is related to……….
A. Axon
B. Dendron
C. Cell body
D. None of these
Answer:
A. Axon

Question 45.
Involuntary striated muscles are found in the walls of……….
A. Lungs
B. Heart
C. Kidney
D. Blood vessels
Answer:
B. Heart

Fill in the blanks

1. ………… epithelium takes part in gaseous exchange.
2. Blood and ………… act as transporting fluids.
3. Voluntary muscles are attached to…………
4. ………… muscles are responsible for rhythmic contraction and relaxation of the heart.
5…………. tissue stores fat for future use.
6. ………… is anchored to bones by tendons.
7. Epithelial layers receive nourishment from the underlying connective tissue through ………… membrane.
8. A ………… is the basic unit of striated muscle tissue.
9. A ………… is the basic unit of nervous system.
10. Bones and ……….. form the skeleton.
Answer:
1. Squamous
2. Lymph
3. Bones
4. Cardiac
5. Adipose
6. Muscle
7. Basement
8. Sarcomere
9. Neuron
10. Cartilages

State True or False

1. A skeletal muscle fibre is surrounded by a plasma membrane called sarcolemma. — True
2. Epithelial cells have a special role in secretion. — True
3. Muscle fibres are always uninucleated. — False
4. Epithelial tissue is also known as the contracting tissue. — False
5. Fibrous tissues are a kind of epithelial tissue. — False
6. Connective tissue orginates from mesoderm layer of embryo. — True
7. Smooth muscles control movement of visceral organs like intestine, ovary, urinary bladder etc. — True
8. Several neuroglias, surrounded by a connective tissue, form a nerve. — False

Match the columns

Left column	Right column
1. Epithelial tissue	A. Connecting tissue
2. Nervous tissue	B. Covering tissue
3. Muscular tissue	C. Coordinating tissue
4. Connective tissue	D. Contracting tissue
	E. Controlling tissue

Answer:
1-B; 2-C; 3-D; 4-A

Left column	Right column
1. Plasma membrane	A. Vacuole
2. Nucle protein	B. Myelin sheath
3. Tonoplast	C. Nissl granules
4. Lipid coating	D. Sarcolemma
	E. Sarcomere

Answer:
1-D; 2-C; 3-A; 4-B

Left column	Right column
1 Chlorenchyma	A. Complex permanent tissue
2 Neuroglia	B, Connective tissue
3. Tracheids	C. Muscular tissue
4, Adipocytes	D, Nervous tissue
	E. Simple permanent tissue

Answer:
1-E; 2-D; 3-A; 4-B

Left column	Right column
1. Transportation and storage of foods	A. Muscular tissue
2. Movements of viscera! organs	B. Phloem
3. Coordination among all organs within body	C. Sclerenchyma
4. Provides mechanical strength	D. Collenchyma
	E. Nervous tissue

Answer:
1-B; 2-A; 3-E; 4 -C

WBBSE Class 9 Life Science MCQ Questions Chapter 3.3 Nutrition

January 29, 2024 by Prasanna

Well structured WBBSE Class 9 Life Science MCQ Questions Chapter 3.3 Nutrition can serve as a valuable review tool before exams.

Nutrition Class 9 WBBSE MCQ Questions

Multiple Choice Questions :

Question 1.
By nutrition-
(A) Potential energy is converted into kinetic energy
(B) Kinetic energy is stored in the cells
(C) Heat is generated in the body
(D) Dry weight of the body increases
Answer:
(D) Dry weight of the body increases

Question 2.
Function of food is-
(A) Generation of energy
(B) Maintaining body growth
(C) Prevention of diseases
(D) All of these
Answer:
(D) All of these

Question 3.
Select the correct statement.
(A) Nutrition always depends upon digestion
(B) Digestion is a type of nutrition
(C) Nutrition is none other than digestion
(D) Digestion is a step of nutrition
Answer:
(D) Digestion is a step of nutrition

Question 4.
Select the correct statement.
(A) All foods need digestion before assimilation
(B) Assimilation of food is unnecessary for green plants as they synthesise ready food
(C) Assimilation is the most essential part of any nutrition
(D) All are correct
Answer:
(C) Assimilation is the most essential part of any nutrition

Question 5.
Assimilation is a step of nutrition, by which-
(A) Complex food is converted into simple absorbable form
(B) Essential nutrients get integrated into the protoplasm
(C) Nutrients are taken in by body fluid from the digestive tract
(D) Blood supply nutrients to the tissue
Answer:
(B) Essential nutrients get integrated into the protoplasm

Question 6.
Green plants perform nutrition by-
(A) Photosynthesis and absorption
(B) Photosynthesis and digestion
(C) Photosynthesis and assimilation
(D) Photosynthesis and egestion
Answer:
(C) Photosynthesis and assimilation

Question 7.
Parasitic nutrition is seen amongst-
(A) Some fungi
(B) Cuscuta
(C) Louse
(D) All of these
Answer:
(D) All of these

Question 8.
Similarity between Rafflesia and Puccinia is that, both are-
(A) Parasitic plants
(B) Saprophytic plants
(C) Autotrophic plants
(D) Partial parasites
Answer:
(A) Parasitic plants

Question 9.
Lichen is a-
(A) Saprophytic fungus
(B) Symbiotic association of algae and fungi
(C) Parasitic fungus
(D) None of these
Answer:
(B) Symbiotic association of algae and fungi

Question 10.
Insectivorous plants depend on insects for-
(A) Phosphorus
(B) Iron
(C) Nitrogen
(D) Calcium
Answer:
(C) Nitrogen

Question 11.
Mycorrhiza is a symbiotic association between plant root and-
(A) Bacteria
(B) Algae
(C) Fungus
(D) None of there
Answer:
(C) Fungus

Question 12.
Parasitic organisms always show-
(A) Close association
(B) Nutritional interdependence
(C) Benefit of themselves
(D) Benefit of both members
Answer:
(C) Benefit of themselves

Question 13.
Escherichia coli helps in the synthesis of vitamin B₁₂ in our intestine. This is a case of-
(A) Autotrophism
(B) Heterotrophism
(C) Symbiosis
(D) Competition
Answer:
(C) Symbiosis

Question 14.
Coprophagy is a typical nutritional technique, seen among-
(A) Few cattle
(B) Few rodents
(C) Most herbivores
(D) Few carnivores
Answer:
(B) Few rodents

Question 15.
Sanguinivores include-
(A) Mosquitoes
(B) Mosquitoes and vampire bats
(C) Leeches and bedbugs
(D) All of these
Answer:
(D) All of these

Question 16.
Mammals are heterodont because they-
(A) Possess similar type of teeth
(B) Have different types of teeth
(C) Show teething twice in life
(D) Have socketted teeth
Answer:
(B) Have different types of teeth

Question 17.
Dental formula of adult man is-
(A) I \(\frac{2}{2}\), C \(\frac{1}{1}\), PM \(\frac{2}{2}\), M \(\frac{3}{3}\)
(B) I \(\frac{2}{2}\), C \(\frac{1}{1}\), PM \({\frac{3}{3}]/latex[, M [latex]\frac{2}{2}\)
(C) I \(\frac{1}{1}\), C \(\frac{2}{2}\), PM \(\frac{2}{2}\), M \(\frac{3}{3}\)
(D) I \(\frac{2}{2}\), C \(\frac{1}{1}\), PM \(\frac{2}{2}\), M\(\frac{2}{2}\)
Answer:
(A) I \(\frac{2}{2}\), C \(\frac{1}{1}\), PM \(\frac{2}{2}\), M \(\frac{3}{3}\)

Question 18.
A five year old child has-
(A) 24 teeth
(B) 28 teeth
(C) 16 teeth
(D) 20 teeth
Answer:
(D) 20 teeth

Question 19.
Ptyalin and trypsin act respectively on-
(A) Starch and peptone
(B) Peptone and starch
(C) Sucrose and protein
(D) Peptide and peptone
Answer:
(A) Starch and peptone

Question 20.
The processes by which absorption occur in the small intestine are-
(A) Diffusion
(B) Osmosis
(C) Active transport
(D) All of these
Answer:
(D) All of these

Question 21.
Oesophagus enters into stomach through-
(A) Cardiac end
(B) Fundus
(C) Pyloric end
(D) None of these
Answer:
(A) Cardiac end

Question 22.
The ‘J’ shaped portion of the small intestine is called-
(A) Jejunum
(B) Duodenum
(C) Ilium
(D) Ileum
Answer:
(B) Duodenum

Question 23.
Chyme is the semi-fluid acidic mass of partially digested food found in the-
(A) Buccal cavity
(B) Stomach
(C) Duodenum
(D) Jejunum
Answer:
(B) Stomach

Question 24.
The longest portion of the human intestine is-
(A) Duodenum
(B) Jejunum
(C) Ileum
(D) Colon
Answer:
(C) Ileum

Question 25.
The main site of water absorption in the human GI tract is-
(A) Stomach
(B) Ileum
(C) Jejunum
(D) Colon
Answer:
(D) Colon

Question 26.
Bile helps in the digestion of-
(A) Protein
(B) Fat
(C) Carbohydrates
(D) All of these
Answer:
(D) All of these

Question 27.
Chyle is a partly digested liquid present in the-
(A) Stomach
(B) Jejunum
(C) Large intestine
(D) Rectum
Answer:
(B) Jejunum

Question 28.
Villi increase-
(A) Inner surface area of oesophagus
(B) Inner surface area of small intestine
(C) Inner surface area of stomach
(D) Inner surface area of colon
Answer:
(B) Inner surface area of small intestine

Question 29.
HCl in the stomach helps in-
(A) Killing germs
(B) Activation of proenzymes
(C) Decrease of pH
(D) All of these
Answer:
(D) All of these

Question 30.
Liver has role in-
(A) Excretion
(B) Gastric juice secretion
(C) HCl secretion
(D) Bile secretion
Answer:
(D) Bile secretion

Question 31.
Succus entericus is secreted from-
(A) Salivary gland
(B) Stomach
(C) Pancreas
(D) Small intestine
Answer:
(D) Small intestine

Question 32.
Similarity between saliva and gastric juice is-
(A) Both kill bacteria
(B) Both help in fat digestion
(C) Both help in carbohydrate digestion
(D) Both help in protein digestion
Answer:
(A) Both kill bacteria

Question 33.
Carrion feeding is shown by-
(A) Cattle
(B) Crow
(C) Pigeon
(D) Cat
Answer:
(B) Crow

Question 34.
Saprophytic nutrition is also found in-
(A) Euglena
(B) Amoeba
(C) Paramoecium
(D) Plasmodium
Answer:
(A) Euglena

Question 35.
Hydrolytic enzymes help in-
(A) Digestion
(B) Absorption
(C) Assimilation
(D) Diffusion of food
Answer:
(A) Digestion

Question 36.
Generally, enzymes and hormones are formed from-
(A) Carbohydrate
(B) Protein
(C) Fats
(D) Vitamins
Answer:
(B) Protein

Question 37.
Which of the following is not an essential fatty acid?
(A) Linoleic acid
(B) Ascorbic acid
(C) Linolenic acid
(D) Arachidonic acid
Answer:
(B) Ascorbic acid

Question 38.
The enzyme present in the salivary glands which helps to kill bacteria, is-
(A) Amylase
(B) Ptyalin
(C) Maltase
(D) Lysozyme
Answer:
(D) Lysozyme

Question 39.
The proteinaceous part of tooth is the-
(A) Enamel
(B) Pulp
(C) Dentine
(D) Gum
Answer:
(C) Dentine

Question 40.
The bacteria, present in the large intestine, which helps to synthesise vitamin K and folic acid, is-
(A) Escherichia coli
(B) Clostridium sp.
(C) Rhizobium sp.
(D) Nostoc sp.
Answer:
(A) Escherichia coli

Question 41.
The protein-digesting enzyme which is not present in the human body, is-
(A) Pepsin
(B) Rennin
(C) Erepsin
(D) Trypsin
Answer:
(B) Rennin

Question 42.
The aerial roots found in the orchids, which help in the absorption of water vapour, is called-
(A) Haustoria
(B) Velamen
(C) Villus
(D) None of these
Answer:
(B) Velamen

Fill in the blanks :

Growth and _____ are two anabolic processes.
We can taste sweet with the taste buds placed at _____ of our tongue.
Agaricus performs _____ type of nutrition.
There are _____ salivary glands in human mouth.
Trypsin is a/an _____ enzyme.
Haustoria is a _____ .
_____ engulfs food with the help of pseudopodia.
_____ reacts with starch to form a deep blue colour.
The part of the alimentary canal to which appendix is attached, is the _____ .
Heterotrophic nutrition involves _____ steps.
Hydra engulfs food with the help of _____ .
_____ is an animal starch.
_____ is a balanced diet for children.
Gall bladder is located beneath the _____ lobe of liver.
In the stomach, HCl hydrolyses _____ into glucose and fructose.

Answer:

Nutrition
Tip
Saprophytic
Six
Proteolytic
Sucking root
Amoeba
Iodine
Caecum
Five
Tentacles
Glycogen
Milk
Right
Sucrose

State true or false :

About 9.3 kcal energy is generated by complete oxidation of one gram of protein.
There are three pairs of salivary glands, namely parotid, sub-maxillary and sublingual glands.
One of the functions of liver is to kill germs by phagocytosis.
Hyperthyroidism is a metabolic disorder.
During photosynthesis anabolism occurs.
Bile acts in the acidic pH of stomach.
In atherosclerosis, hypertension occurs due to reduction in diameter of arterial lumen.
Ptyalin acts on boiled proteins.
For perfect distribution of calorie in a diet, the ratio of carbohydrate, protein and fat should be 2: 1: 1.
Prolonged fasting leads to excessive protein breakdown and discharge of ketone through urine.
A symbiotic bacterium Rhizobium sp. synthesises vitamin B₁₂ in human intestine.
Lichen is an example of symbiotic association between algae and fungi.
Blue-green algae are capable of synthesising their own food by photosynthesis.
Bile juice contains different enzymes that help in the emulsification of fats.
Vitamin C is not found in eggs.

Answer:

False
True
True
False
True
False
True
False
False
True
False
True
True
False
True

Match the columns :

Question 1.

Left column	Right column
1. Parasitic nutrition	A. Mucor
2. Saprophytic nutrition	B. Green plant
3. Symbiotic nutrition	C. Cuscuta
4. Insectivory	D. Lichen
	E. Sundew

Answer:

Left column	Right column
1. Parasitic nutrition	C. Cuscuta
2. Saprophytic nutrition	A. Mucor
3. Symbiotic nutrition	D. Lichen
4. Insectivory	E. Sundew

Question 2.

Left column	Right column
1. Herbivory	A. Mosquito
2. Carnivory	B. Agaricus
3. Omnivory	C. Hyena
4. Sanguinivory	D. Cow
	E. Human

Answer:

Left column	Right column
1. Herbivory	D. Cow
2. Carnivory	C. Hyena
3. Omnivory	E. Human
4. Sanguinivory	A. Mosquito

Question 3.

Left column	Right column
1. Lipase	A. Maltose
2. Pepsin	B. Fatty acid and glycerol
3. Lactose	C. Peptone
4. Ptyalin	D. Glucose and galactose
	E. Glucose and fructose

Answer:

Left column	Right column
1. Lipase	B. Fatty acid and glycerol
2. Pepsin	C. Peptone
3. Lactose	D. Glucose and galactose
4. Ptyalin	A. Maltose

Question 4.

Left column	Right column
1. Ptyalin	A. Liver
2. Pepsin	B. Salivary glands
3. Bile	C. Stomach
4. Trypsin	D. Small intestine
	E. Pancreas

Answer:

Left column	Right column
1. Ptyalin	B. Salivary glands
2. Pepsin	C. Stomach
3. Bile	A. Liver
4. Trypsin	E. Pancreas

WBBSE Class 9 Life Science MCQ Questions Chapter 2.3A Tissue: Plant Tissue and its Distribution

January 29, 2024 by Prasanna

Well structured WBBSE Class 9 Life Science MCQ Questions Chapter 2.3A Tissue: Plant Tissue and its Distribution can serve as a valuable review tool before exams.

Tissue: Plant Tissue and its Distribution Class 9 WBBSE MCQ Questions

Multiple Choice Questions & Answers

Question 1.
Which of the following does not have a tissue system?
A. Amoeba
B. Volvox
C. Sponges
D. All of these
Answer:
D. All of these

Question 2.
An organism possesses different types of tissues and organs due to………….
A. Organogenesis
B. Differentiation
C. Cell division
D. None of these
Answer:
B. Differentiation

Question 3.
Cells of a tissue always have………….
A. Similarity in size and shape
B. Same life span
C. Same function
D. Different origin
Answer:
C. Same function

Question 4.
Cells of meristematic tissue are………….
A. Of same size and shape
B. Capable of division
C. Undifferentiated
D. All of these
Answer:
D. All of these

Question 5.
Meristematic tissues are seen in………….
A. Green leaves
B. Matured fruit
C. Root tip
D. Shoot
Answer:
C. Root tip

Question 6.
Meristem present at the tip of root and stem is called………….
A. Primary meristem
B. Secondary meristem
C. Cambium
D. Apical meristem
Answer:
D. Apical meristem

Question 7.
Stems of trees become thick by the activity of………….
A. Lateral meristem
B. Intercalary meristem
C. Primary meristem
D. Apical meristem
Answer:
A. Lateral meristem

Question 8.
Intercalary meristem is found in………….
A. Root apex
B. Stem apex
C. Nodes
D. Internodes
Answer:
D. Internodes

Question 9.
A tissue has cells with no intercellular space and vacuole in cytoplasm. This tissue is a………….
A. Xylem tissue
B. Parenchyma tissue
C. Meristematic tissue
D. Collenchyma tissue
Answer:
C. Meristematic tissue

Question 10.
The crispy nature of pears and apples is due to………….
A. Parenchyma
B. Xylem
C. Sclereids
D. Collenchyma
Answer:
C. Sclereids

Question 11.
Permanent tissues are composed of………….
A. Undifferentiated cells
B. Identical cells
C. Growing cells
D. Matured cells
Answer:
D. Matured cells

Question 12.
Cambium is a meristematic tissue, which may be seen in………….
A. Vascular bundle
B. Shoot tip
C. Root tip
D. Flower bud
Answer:
A. Vascular bundle

Question 13.
Cork cambium is present………….
A. Inside vascular bundle
B. Outside vascular bundle
C. Inside fruits
D. In the leaves
Answer:
B. Outside vascular bundle

Question 14.
Cells of permanent tissue are………….
A. Thin………….walled and full of cytoplasm
B. Without vacuoles
C. Unable to divide
D. Capable of cell division
Answer:
C. Unable to divide

Question 15.
Cells of parenchymal tissues are………….
A. Loosely packed with wide intercellular spaces
B. Unevenly thickened at the corners
C. Evenly thick and highly lignified
D. Undifferentiated
Answer:
A. Loosely packed with wide intercellular spaces

Question 16.
Cells with thick and highly lignified cell wall are seen in………….
A. Parenchyma
B. Collenchyma
C. Sclerenchyma
D. Aerenchyma
Answer:
C. Sclerenchyma

Question 17.
The gymnosperm where trachea is found, is ………….
A. Pinus sp.
B. Gnetum sp.
C. Cycas sp.
D. Ginkgo sp.
Answer:
B. Gnetum sp.

Question 18.
The tissue taking part in photosynthesis belongs to………….
A. Parenchyma
B. Collenchyma
C. Sclerenchyma
D. Meristematic tissue
Answer:
A. Parenchyma

Question 19.
Which tissue takes part in storing food in plant body?
A. Parenchyma
B. Sclerenchyma
C. Phloem
D. Xylem
Answer:
A. Parenchyma

Question 20.
Which are the main components of vascular bundle?
A. Parenchyma
B. Sclerenchyma
C. Xylem
D. Xylem and Phloem
Answer:
D. Xylem and Phloem

Question 21.
Which simple permanent tissue is composed of non………….living cells?
A. Xylem
B. Phloem
C. Sclerenchyma
D. Collenchyma
Answer:
C. Sclerenchyma

Question 22.
Cells of a tissue having a large and prominent nucleus and are capable of undergoing division can be identified as a………….
A. Meristem
B. Parenchyma
C. Collenchyma
D. Sclerenchyma
Answer:
A. Meristem

Question 23.
Cells of this tissue are thin………….walled, densely packed, capable of undergoing division and are located at the tip of roots. This is………….
A. Parenchyma
B. Collenchyma
C. Intercalary meristem
D. Apical meristem
Answer:
D. Apical meristem

Question 24.
Intercalary meristem remains………….
A. At the apex of shoots and roots
B. In vascular bundle
C. In between two permanent tissue layers
D. On the surface of plant body
Answer:
C. In between two permanent tissue layers

Question 25.
Formation of bark involves………….
A. Apical meristem
B. Intercalary meristem
C. Vascular cambium
D. Cork cambium
Answer:
D. Cork cambium

Question 26.
Parenchyma cells containing ergastic materials are called………….
A. Aerenchyma
B. Parenchyma
C. Idioblasts
D. Collenchyma
Answer:
C. Idioblasts

Question 27.
Epidermis and ground tissue of plant body are typically made up of………….
A. Parenchyma
B. Collenchyma
C. Sclerenchyma
D. Aerenchyma
Answer:
A. Parenchyma

Question 28.
Buoyancy of aquatic plants is maintained by………….
A. Parenchyma
B. Collenchyma
C. Sclerenchyma
D. Aerenchyma
Answer:
D. Aerenchyma

Question 29.
Cells of this tissue have typical angular thickening; this simple permanent tissue is called………….
A. Parenchyma
B. Collenchyma
C. Sclerenchyma
D. Xylem
Answer:
B. Collenchyma

Question 30.
Sieve tube of an angiospermic plant………….
A. Is involved in transportation of water in plants
B. Is associated with companion cells
C. Is associated with guard cells
D. Provides additional mechanical strength
Answer:
B. Is associated with companion cells

Question 31.
Which are complex permanent tissues?
A. Parenchyma and collenchyma
B. Collenchyma and sclerenchyma
C. Sclerenchyma and xylem
D. Xylem and phloem
Answer:
D. Xylem and phloem

Question 32.
Ray cells are a kind of………….
A. Parenchyma
B. Companion cell
C. Sieve tube
D. Trachea
Answer:
A. Parenchyma

Question 33.
Tracheae of xylem are………….
A. Elongated cells with pointed ends and pits on the cell wall
B. Elongated hollow tubular cells
C. Thin elongated fibre………….like cells
D. Elongated living cells
Answer:
B. Elongated hollow tubular cells

Question 34.
Tissue responsible for transportation of food in different parts of a plant body is………….
A. Xylem
B. Trachea
C. Tracheid
D. Sieve tube
Answer:
D. Sieve tube

Question 35.
The cells involved in water transportation in plants are………….
A. Tracheids
B. Trachea
C. Xylem fibres
D. Both A. and B.
Answer:
D. Both A. and B.

Question 36.
Mechanical strength of a plant is provided by………….
A. Sieve tubes
B. Companion cells
C. Parenchyma
D. Phloem fibres
Answer:
D. Phloem fibres

Question 37.
Stone cell is a modification of………….
A. Parenchyma
B. Collenchyma
C. Sclerenchyma
D. Aerenchyma
Answer:
C. Sclerenchyma

Question 38.
Harder wood are rich in………….
A. Xylem parenchyma
B. Trachea
C. Xylem fibre
D. Tracheid
Answer:
C. Xylem fibre

Question 39.
Cells of sclerenchyma tissue have………….
A. Evenly thick cell wall with hollow lumen
B. Cell wall with angular thickening and no intercellular space
C. Thin cell walled living cells
D. Large intercellular spaces
Answer:
A. Evenly thick cell wall with hollow lumen

Question 40.
Fibre of jute is………….
A. Xylem fibre
B. Tracheid
C. Trachea
D. Phloem fibre
Answer:
D. Phloem fibre

Fill in the blanks

1. The term tissue was given by …………
2. Thickening in collenchyma is consisted of ………… and pectin.
3. ………… cells of phloem do not have perforated cell wall.
4. The phenomenon by which a mass of cells take up definite structure and function is called …………
5. Tracheae are also known as …………
6. Organisation of tissue is absent in ………… organisms.
7. Jute is one economically important ………… fibre.
8. ………… is the living plant tissue that is devoid of intercellular spaces.
9. Study of tissue is called …………
10. The only living component of xylem is …………
Answer:
1. Bichat
2. Cellulose
3. Companion
4. Differentiation
5. Vessels
6. Unicellular
7. Phloem
8. Merisem
9. Histology
10. Xylem parenchyma

State True or False

1. Sieve tubes are unicellular. — False
2. Intercellular spaces can be found in meristematic tissue. — False
3. Permanent tissue differentiates into meristematic tissue. — False
4. All types of sclereids are called as stone cells. — False
5. Gnetum is the only gymnosperm where companion cells are present in phloem. — True
6. Phloem parenchyma is absent in monocotyledonous plants. — True
7. Apical meristem is responsible for growth of plant along the length. — True
8. Connective tissue is actually one type of parenchyma without intercellular space found in xylem and phloem. — True
9. The only dead component of phloem is sieve tube. — False
10. Same or different types of cells aggregate to form a tissue to perform a specific function. — True
11. Cells of phloem parenchyma store ergastic metabolites in them. — True

Match the columns

Left column	Right column
1. Nutritive tissue	A. Cork cambium
2. Stone cells	B. Xylem parenchyma
3. Phellogen	C. Chlorenchyma
4. Wood fibre	D. Tracheae
	E. Sclereids

Answer:
1-C; 2-E; 3-A; 4-B

Left column	Right column
1. Flexibility	A. Parenchyma
2. Growth	B. Sclerenchyma
3. Photosynthesis	C. Meristem
4. Mechanical strength	D. Collenchyma
	E. Aerenchyma

Answer:
1-D; 2-C; 3-A; 4-B

Left column	Right column
1. Chromoplastid	A. Vascular cambium
2. Night blindness	B. Lysosome
3. Autolysis	C. Cisternae
4. Lateral meristem	D. Carotene, xanthophyll
	E. Vitamin A

Answer:
1-D; 2-E; 3-B; 4-A

Left column	Right column
1. Idioblast	A. Parenchyma
2. Eleioplast	B. Chromosome
3. Nucleoside	C. Cell membrane
4. Phagocytosis	D. Plastid
	E. Cell wall

Answer:
1-A; 2-D; 3-B; 4-C

WBBSE Class 9 Life Science MCQ Questions Chapter 3.4 Circulation

January 29, 2024 by Prasanna

Well structured WBBSE Class 9 Life Science MCQ Questions Chapter 3.4 Circulation can serve as a valuable review tool before exams.

Circulation Class 9 WBBSE MCQ Questions

Multiple Choice Questions :

Question 1.
Circulation is a biological process, involved in the transportation of –
(A) Nutrients
(B) Excretory materials
(C) Respiratory gases
(D) All of these
Answer:
(D) All of these

Question 2.
Which of the following statements is incorrect?
(A) By circulation metabolic wastes are carried to the excretory organs
(B) By circulation metabolic wastes are expelled from the body
(C) Blood carries oxygen as a compound
(D) Blood keeps our body warm
Answer:
(B) By circulation metabolic wastes are expelled from the body

Question 3.
The components of circulatory system are-
(A) Lungs, heart, kidney
(B) Blood vessels and blood
(C) Blood and lymph
(D) Heart, blood vessels, blood and lymph
Answer:
(D) Heart, blood vessels, blood and lymph

Question 4.
Blood vessels include-
(A) Arteries
(B) Veins
(C) Arteries and veins
(D) Veins, arteries and capillaries
Answer:
(D) Veins, arteries and capillaries

Question 5.
Normal human heart beats-
(A) 5720 times / hr.
(B) 4320 times / hr.
(C) 6720 times/hr.
(D) 72 times/hr.
Answer:
(B) 4320 times / hr.

Question 6.
Heartbeat is controlled by the-
(A) Activity of cardiac muscle
(B) Activity of cardiac muscles and special connective tissues
(C) Activity of cardiac muscles, special connective tissues and central nervous system
(D) Activity of cardiac muscles and central nervous system
Answer:
(C) Activity of cardiac muscles, special connective tissues and central nervous system

Question 7.
Human blood is red due to-
(A) A respiratory pigment
(B) An excretory material
(C) A photosynthetic pigment
(D) None of these
Answer:
(A) A respiratory pigment

Question 8.
Haemoglobin and haemocyanin are similar, because both-
(A) Are non-protein pigments
(B) Are metallo-proteins
(C) Carry iron
(D) Carry copper
Answer:
(B) Are metallo-proteins

Question 9.
Artery carries blood from-
(A) Heart to body parts
(B) Body parts to heart
(C) Lungs to heart
(D) None of these
Answer:
(A) Heart to body parts

Question 10.
Haemolymph and haemocoel are the components of circulatory system of-
(A) Crab
(B) Earthworm
(C) Cockroach
(D) Starfish
Answer:
(C) Cockroach

Question 11.
Haemocoel is a-
(A) Chamber of insect heart
(B) Chamber of earthworm heart
(C) Body cavity filled with haemolymph
(D) None of these
Answer:
(C) Body cavity filled with haemolymph

Question 12.
Pericardial sinus is present in cockroach-
(A) Around the heart
(B) Around the gut
(C) Around the nerve cord
(D) Inside head
Answer:
(A) Around the heart

Question 13.
Largest sinus of insect haemocoel is-
(A) Pericardial sinus
(B) Perivisceral sinus
(C) Perineural sinus
(D) Cephalic sinus
Answer:
(B) Perivisceral sinus

Question 14.
Cockroach heart has-
(A) 13 chambers
(B) 25 openings
(C) 24 ostia
(D) All of these
Answer:
(D) All of these

Question 15.
Blood from cockroach’s heart first reaches the-
(A) Pericardial sinus
(B) Perivisceral sinus
(C) Perineural sinus
(D) Cephalic sinus
Answer:
(D) Cephalic sinus

Question 16.
Open circulatory system does not possess-
(A) Artery
(B) Vein
(C) Capillaries
(D) Heart
Answer:
(C) Capillaries

Question 17.
Blood from heart to lungs passes through-
(A) Pulmonary vein
(B) Pulmonary artery
(C) Systemic artery
(D) Carotid artery
Answer:
(B) Pulmonary artery

Question 18.
Body fluid includes-
(A) Blood and lymph
(B) Blood, lymph and cerebrospinal fluid
(C) Urine, blood and lymph
(D) All of these
Answer:
(B) Blood, lymph and cerebrospinal fluid

Question 19.
Select the wrong statement.
(A) Intracellular fluid is called cytosol
(B) Blood is an intracellular fluid
(C) Urine is an extracellular fluid
(D) Cerebrospinal fluid is an extracellular fluid
Answer:
(B) Blood is an intracellular fluid

Question 20.
The material, synthesised in the cell and transported through the blood is-
(A) Enzyme
(B) Starch
(C) Hormones
(D) Fat
Answer:
(C) Hormones

Question 21.
The material, stored in the blood is-
(A) Glycogen
(B) Steroid
(C) Cholesterol
(D) Enzyme
Answer:
(C) Cholesterol

Question 22.
Transportation of lipid is the main function of-
(A) Blood
(B) Lymph
(C) Synovial fluid
(D) Cerebrospinal fluid
Answer:
(B) Lymph

Question 23.
Prawn blood is bluish in colour due to the presence of-
(A) Iron
(B) Copper
(C) Haemocyanin
(D) Haemoglobin
Answer:
(C) Haemocyanin

Question 24.
Blood sugar is-
(A) Glucose
(B) Fructose
(C) Glycogen
(D) Starch
Answer:
(A) Glucose

Question 25.
Which is serum protein?
(A) Albumin and globulin
(B) Fibrinogen and prothrombin
(C) Only globulin
(D) All of these
Answer:
(D) All of these

Question 26.
A non-protein nitrogen present in plasma is-
(A) Urea
(B) Albumin
(C) Haemoglobin
(D) None of these
Answer:
(A) Urea

Question 27.
Which one does not have any granules in cytoplasm?
(A) Eosinophil
(B) Basophil
(C) Neutrophil
(D) Lymphocyte
Answer:
(D) Lymphocyte

Question 28.
Agranulocytes have-
(A) Non-granular cytoplasm
(B) Unlobbed nucleus
(C) Homogeneous cytoplasm
(D) All of these
Answer:
(D) All of these

Question 29.
destroy germs by phagocytosis.
(A) Monocyte
(B) Neutrophil
(C) Both (A) and (B)
(D) None of these
Answer:
(C) Both (A) and (B)

Question 30.
RBC of blood group AB contains-
(A) Agglutinogen A
(B) Agglutinogen B
(C) Agglutinin A and B
(D) Agglutinogen A and B
Answer:
(D) Agglutinogen A and B

Question 31.
Blood group 0 contains-
(A) Agglutinogen A & B on RBC
(B) Agglutinin alpha & beta in plasma
(C) Agglutinogen alpha & beta in plasma
(D) Agglutinin A & B on RBC
Answer:
(B) Agglutinin alpha & beta in plasma

Question 32.
Blood coagulation needs-
(A) Ca²⁺ ions
(B) Thromboplastin
(C) Fibrinogen
(D) All of these
Answer:
(D) All of these

Question 33.
Transfusion of unmatched blood may lead to-
(A) Increase in blood pressure
(B) Heart failure
(C) Haemolysis
(D) Blood coagulation
Answer:
(C) Haemolysis

Question 34.
Anti-coagulant of blood inside blood vessels is-
(A) Sodium citrate
(B) Calcium citrate
(C) Heparin
(D) All of these
Answer:
(C) Heparin

Question 35.
Which valve of human heart remains closed during diastole of ventricle
(A) Mitral valve
(B) Right atrioventricular valve
(C) Semi-lunar valve
(D) Eustachian valve
Answer:
(C) Semi-lunar valve

Question 36.
Which valves remain closed during systole of ventricle?
(A) Mitral valve
(B) Right atrioventricular valve
(C) Both (A) and (B)
(D) None of these
Answer:
(C) Both (A) and (B)

Question 37.
In puimonary circulation, blood moves-
(A) From heart to lungs
(B) From lungs to heart and back to lungs
(C) From heart to lungs and lungs to other parts of the body
(D) From different parts of the body to lungs
Answer:
(B) From lungs to heart and back to lungs

Question 38.
The lipid present in blood is-
(A) Cholesterol
(B) Glucose
(C) Lactic acid
(D) Glycerol
Answer:
(A) Cholesterol

Question 39.
Venous heart is found in-
(A) Frog
(B) Human
(C) Fish
(D) Birds
Answer:
(C) Fish

Question 40.
Vitamin helps in the production of prothrombin in liver.
(A) A
(B) K
(C) E
(D) C
Answer:
(B) K

Question 41.
The instrument used to measure blood pressure is-
(A) Haemometer
(B) Sphygmomanometer
(C) Haemocytometer
(D) Sphygmograph
Answer:
(B) Sphygmomanometer

Fill in the blanks :

By means of ______ fluid, excretory matters from tissues are transported to the excretory organs.
Other than cholesterol, lecithin is present in plasma, which is a ______.
Only ______ blood passes through the venous heart of fish.
The matrix of blood is known as ______.
______ blood group is known as universal recipient.
The outer layer of blood vessels is known as ______.
_____ valve is present at the right atrioventricular opening of human heart.
The unit by which human blood pressure is measured, is mm of ______.

Answer:

Circulatory
Fat
Deoxygenated
Plasma
AB
Tunica adventitia
Tricuspid
Hg

State true or false :

Lymph is a special tissue fluid.
Haemocyanin is present in the body of prawn.
Bicuspid valve is present at right atrioventricular opening.
‘O’ blood group is known as universal doner.
Some invertebrates contain haemoglobin in RBC.
Veins carry blood towards the heart.
Thrombocytes contain bilobed nucleus.
Due to blood donation doner becomes sick.
Karl Landsteiner was the person who discovered Rh} factor.
Blood can be created artificially.

Answer:

True
True
False
True
False
True
False
False
True
False

Match the columns :

Question 1.

Left column	Right column
1. RBC	A. Blood clotting
2. WBC	B. Shock absorber of brain
3. Platelet	C. Transportation of bile
4. CSF	D. Prevention of disease
	E. Carries O₂ and CO₂ to organs

Answer:

Left column	Right column
1. RBC	E. Carries O₂ and CO₂ to organs
2. WBC	D. Prevention of disease
3. Platelet	A. Blood clotting
4. CSF	B. Shock absorber of brain

Question 2.

Left column	Right column
1. Lymph	A. Fluid connective tissue
2. Blood	B. Modified tissue fluid
3. Plasma	C. mm of Hg
4. Blood pressure	D. Matrix of blood
	E. Excretory fluid

Answer:

Left column	Right column
1. Lymph	B. Modified tissue fluid
2. Blood	A. Fluid connective tissue
3. Plasma	D. Matrix of blood
4. Blood pressure	C. mm of Hg

Question 3.

Left column	Right column
1. Anaemia	A. Left atrioventricular opening
2. Tricuspid valve	B. Pancreas
3. Trypsin	C. Superior vena cava
4. Mitral valve	D. Decreased RBC count
	E. Right atrioventricular opening

Answer:

Left column	Right column
1. Anaemia	D. Decreased RBC count
2. Tricuspid valve	E. Right atrioventricular opening
3. Trypsin	B. Pancreas
4. Mitral valve	A. Left atrioventricular opening

Question 4.

Left column	Right column
1. Cockroach	A. Oxygen transport
2. Haemoglobin	B. Sphygmomanometer
3. Right atrium	C. Pulmonary vein
4. Blood pressure	D. Vena cava
	E. Open circulation

Answer:

Left column	Right column
1. Cockroach	E. Open circulation
2. Haemoglobin	A. Oxygen transport
3. Right atrium	D. Vena cava
4. Blood pressure	B. Sphygmomanometer

WBBSE Class 9 Life Science MCQ Questions Chapter 2.2 Cell

January 29, 2024 by Prasanna

Well structured WBBSE Class 9 Life Science MCQ Questions Chapter 2.2 Cell can serve as a valuable review tool before exams.

Cell Class 9 WBBSE MCQ Questions

Multiple Choice Questions & Answers

Question 1.
Concept of a cell was first proposed by -……………………..
A. Gearge Bentham
B. Robert Hook
C. Linnaeus
D. Leeuwenhoek
Answer:
B. Robert Hook

Question 2.
Protoplasm of a prokaryotic cell has cytoplasm and a- ……………..
A. Nucleus
B. Nucleolus
C. Nucleoid
D. Nucellus
Answer:
C. Nucleoid

Question 3.
Which two are essential parts of a living cell?
A. Nucleus and protoplasm
B. Nucleus and cytoplasm
C. Cell membrane and nucleus
D. Cell membrane and protoplasm
Answer:
D. Cell membrane and protoplasm

Question 4.
Cell membrane is- ……………..
A. Absent in prokaryotic cells
B. Present in eukaryotic cells
C. Present in some prokaryotic cells and all eukaryotic cells
D. Present in all types of cells
Answer:
D. Present in all types of cells

Question 5.
Selectively permeable nature of cell membrane allows the entry of through it.
A. All types of solutions
B. All types of solvents
C. Some solutes without solvents
D. Some solutes with solvents
Answer:
B. All types of solvents

Question 6.
Main structural components of cell membrane are- ……………..
A. Proteins and lipids
B. Proteins and carbohydrates
C. Lipids and carbohydrates
D. Cellulose and lignin
Answer:
A. Proteins and lipids

Question 7.
Which of the cellular function does not involve cell membrane?
A. Cellular secretion
B. Cellular respiration
C. Cell drinking
D. Cell eating
Answer:
B. Cellular respiration

Question 8.
Which type of protein does remain submerged within the lipid bi-laye of a cell membrane?
A. External protein
B. Internal protein
C. Extrinsic protein
D. Intrinsic protein
Answer:
D. Intrinsic protein

Question 9.
A prokaryotic cell is devoid of-……………..
A. Cell membrane
B. DNA
C. True nucleus
C. RNA
Answer:
C. True nucleus

Question 10.
You will find cell wall in a-……………..
A. Blood cell
B. Bacterial cell
C. Bone cell
D. Muscle cell
Answer:
B. Bacterial cell

Question 11.
Basic structural component of cell wall in a photosynthetic plant is -……………..
A. Pectin and protein
B. Lignin and protein
C. Cellulose and pectin
D. Hemi-cellulose and lipid
Answer:
C. Cellulose and pectin

Question 12.
Bacterial cell wall is composed of-……………..
A. Proteins and carbohydrates
B. Amino acids and carbohydrates
C. Proteins and lipids
D. Phospholipids and amino acids
Answer:
B. Amino acids and carbohydrates

Question 13.
According to ‘Fluid Mosaic Model’, which of the statements is best fitted?
A. Phospholipid molecules remain suspended in the protein bi-layer
B. Protein molecules remain suspended in the fluid lipid bi-layer
C. Carbohydrate chains remain attached to the protein molecules
D. Protein molecules remain fixed to the fluid lipid molecules
Answer:
B. Protein molecules remain suspended in the fluid lipid bi-layer

Question 14.
Primary cell wall is present-……………..
A. Just above cell membrane
B. Beyond secondary cell wall
C. Below secondary cell wall
D. Below cell membrane
Answer:
B. Beyond secondary cell wall

Question 15.
Cell organelles remain suspended in-……………..
A. Cell sap
B. Cytoplasm
C. Protoplasm
D. Nuclear sap
Answer:
B. Cytoplasm

Question 16.
Which cellular material helps in locomotion of Amoeba?
A. Cytoplasm
B. Flagella
C. Cilia
C. All of these
Answer:
A. Cytoplasm

Question 17.
Intracellular distribution of molecules depends upon the flow of-……………..
A. Nucleoplasm
B. Cell sap
C. Cytoplasm
D. Nucleoplasm and cytoplasm
Answer:
C. Cytoplasm

Question 18.
In human, which cell does not divide?
A. Matured RBC
B. Matured neuron
C. Matured muscle cell
D. Sieve tube
Answer:
B. Matured neuron

Question 19.
Mitochondria is absent in-……………..
A. RBC of mammals
B. Nerve cells
C. Muscle cells
D. All of these
Answer:
A. RBC of mammals

Question 20.
Nucleus is popularly known as-……………..
A. Brain of a cell
B. Brain of the tissues
C. Heart of a cell
D. Male gametes
Answer:
A. Brain of a cell

Question 21.
Nucleolus is the denser part of a nucleus, which is rich in-……………..
A. DNA
B. RNA
C. Protein
D. Both A and B.
Answer:
B. RNA

Question 22.
Overall activity of a living cell is controlled by-……………..
A. Mitochondrion
B. Plastid
C. Cytoplasm
D. Nucleus
Answer:
D. Nucleus

Question 23.
The cell organelles which have their own DNA are-……………..
A. Nucleus and Golgi body
B. Golgi body and mitochondrion
C. Mitochondrion and chloroplastid
D. Chloroplastid and nucleus
Answer:
C. Mitochondrion and chloroplastid

Question 24.
Cristae of mitochondria are projected-……………..
A. Towards outer chamber
B. Towards inner chamber
C. Beyond outer surface
D. None of these
Answer:
B. Towards inner chamber

Question 25.
The cell organelle involved in the production of ATP is-……………..
A. Nucleus
B. Mitochondrion
C. Plastid
D. Golgi body
Answer:
B. Mitochondrion

Question 26.
Apart from nucleus, two other cell organelles with double membrane are-……………..
A. Mitochondrion and Golgi body
B. Plastid and Golgi body
C. Golgi body and endoplasmic reticulum
D. Mitochondria and plastid
Answer:
D. Mitochondria and plastid

Question 27.
Which of the following cell organelles have single membrane?
A. Plastids and Golgi bodies
B. Mitochondria and Golgi bodies
C. Mitochondria and plastids
D. Golgi bodies and lysosomes
Answer:
D. Golgi bodies and lysosomes

Question 28.
Two semi-independent cell organelles are-……………..
A. Mitochondrion and chloroplastid
B. Plastid and Golgi body
C. Golgi body and endoplasmic reticulum
D. Mitochondrion and Golgi body
Answer:
A. Mitochondrion and chloroplastid

Question 29.
Chlorophyll molecules remain stored in-……………..
A. Thylakoids
B. Inner chamber of chloroplastids
C. Stroma
D. Outer chamber of chloroplastids
Answer:
A. Thylakoids

Question 30.
Reactions of photosynthesis occur in the-……………..
A. Stroma of chloroplastids
B. Grana of chloroplastids
C. Both A. and B.
D. None of these
Answer:
C. Both A. and B.

Question 31.
ATP molecules are stored in the of mitochondria.
A. Outer surface
B. Membranes
C. Outer chamber
D. Matrix
Answer:
D. Matrix

Question 32.
Who invented Electron microscope?
A. Robertson
B. Palade
C. Knoll and Ruska
D. Leeuwenhoek
Answer:
C. Knoll and Ruska

Question 33.
The minute cell organelles, which remain attached to rough endoplasmic reticulum is-……………..
A. Small Golgi vesicles
B. Lysosomes
C. Ribosomes
D. Large Golgi vesicles
Answer:
C. Ribosomes

Question 34.
Ribosomes remain within or in contact of-……………..
A. Nucleus, Golgi bodies and ER
B. Nucleus, cytoplasm, RER, chloroplast and mitochondrion
C. Nucleus and cytoplasm
D. Nucleus, cytoplasm and RER
Answer:
B. Nucleus, cytoplasm, RER, chloroplast and mitochondrion

Question 35.
The largest unicellular plant is -……………..
A. Spirogyra
B. Mucor
C. Acetabularia
D. Volvox
Answer:
C. Acetabularia

Question 36.
The cell organelle, which divides cytoplasm in a number of intracellular compartments is-……………..
A. Endoplasmic reticulum
B. Mitochondrion
C. Middle lamella
D. Golgi cisternae
Answer:
A. Endoplasmic reticulum

Question 37.
The cell organelle involved in the formation of flagella is -……………..
A. Centrosome
B. Lysosome
C. Ribosome
D. Nucleus
Answer:
A. Centrosome

Question 38.
70s ribosomes are seen in the cytoplasm of-……………..
A. White Blood cells
B. Neurons
C. Muscle cell
D. Bacterial cell
Answer:
D. Bacterial cell

Question 39.
The cell organelle, which is called the ‘protein factory of the cell’ is -…………………
A. Plastid
B. Golgi body
C. Nucleus
D. Ribosome
Answer:
D. Ribosome

Question 40.
The organisms which do not possess cytoplasm, are called-…………………
A. Prokaryotes
B. Mesokaryotes
C. Eukaryotes
D. None of these
Answer:
D. None of these

Question 41.
In prokaryotic cell, the function of mitochondria is replaced by-…………………
A. Polysome
B. Ribosome
C. Mesosome
D. Informosome
Answer:
C. Mesosome

Question 42.
The ‘Cell Theory’ was proposed by-…………………
A. Huxley
B. Schwann and Schleiden
C. Rudolf Virchow
D. Robert Hook
Answer:
B. Schwann and Schleiden

Question 43.
The letter ‘S’ of 80S ribosome indicates- …………………
A. Standard
B. Size
C. Sedimentation coefficient
D. All of these
Answer:
C. Sedimentation coefficient

Question 44.
Synthesis of proteins within a cell involves- …………………
A. Lysosome
B. Golgi body
C. Ribosome
D. Centrosome
Answer:
C. Ribosome

Fill in the blanks:

1. The 70S type of ribosome is found in a ……………. type of cell.
2. Oxysome is also known as ……………. particle.
3. ……………. is the cell organelle that helps in the formation of acrosome of a spermatozoa.
4. Total number of microtubule triplet in each centriole is …………….
5. Lysosome with undigested food materials is also named as …………..
6. Colourless, immature plastids are known as …………..
7. The term ………….. is used for a multinucleated animal cell.
8. An ………….. is the biggest cell in human body.
9. Middle lamella of cell-wall is formed from during cell division.
10. …………. is the cytoplasm with yolk and fat as stored material for nutrition.
11. Discs of thylakoids are stacked into a …………………
12. Mitochondrion and plastid are two semi-independent cell organelles as they have their own ……………….
Answer:
1. Prokaryotic
2. F₀ – F₁
3. Golgi body
4. 9/Nine
5. Residual body
6. Proplastids
7. Syncvtium
8. Egg! Ovum
9. Cell plate
10. Trophoplasm
11. Granum
12. DNA

State True or False

1. Both micronucleus and macronucleus can be seen in a Paramoecium cell. — True
2. Plasmodesmata are present in an animal cell. — False
3. A ribosome has two subunits of Parson. — False
4. Aleuroplast is a type of leucoplast which stores proteins. — True
5. Anthocyanin and betacyanin are two fat soluble pigments. —
6. 55S type of ribosomes are found in mitochondria. — True
7. Perinuciear space is the space between the two units of nuclear membrane. — True
8. Spherosome is also known as ‘Plant lysosome.’ — True
9. We can observe the presence of mucopeptide in plant cell wall. — False
10. Chromosomes are only visible in the dividing cells. — True
11. Extrinsic proteins are also called as Tunnel proteins. — False
12. Peridinium is an example of mesokaryotic organism. — True
13. Fernandez-Moran sub-unit is the other name of oxysome. — True

Match the columns

Left column	Right column
1. Ceil Wall	A. Robertson
2. Cell membrane	B. Robert Brown
3. Nucleus	C. Benda
4. Ribosome	D. Robert Hook
	E. George Palade

Answer:
1 – D; 2 – A; 3 – B; 4 – E

Left column	Right column
1. Pinocytosis	A. Ribosome
2. Krebs cycle	B. Chloroplastid
3. Protein synthesis	C. Pinosome
4. Photosynthesis	D. Cell wall
	E. Mitochondrion

Answer:
1-C; 2-E; 3-A; 4-B

Left column	Right column
1. Fibrous protein	A. Ribosome
2. Glycocalyx	B. Cell membrane
3. Homopolysaccharide	C. Collagen
4. Stored Food	D. Starch
	E. Elaiopiast

Answer:
1-C; 2-B: 3-D; 4-E

Left column	Right column
1. Basic protein	A. Histone and DNA
2. Cell eating	B. Histone
3. Chromosome	C. Calcium pectate
4. Middle lamella	D. Phagosome
	E. Polysaccharide

Answer:
1-B: 2-D; 3-A; 4-C

WBBSE Class 9 Life Science MCQ Questions Chapter 2.1 Biomolecules and their Behaviour

January 27, 2024 by Prasanna

Well structured WBBSE Class 9 Life Science MCQ Questions Chapter 2.1 Biomolecules and their Behaviour can serve as a valuable review tool before exams.

Biomolecules and their Behaviour Class 9 WBBSE MCQ Questions

Multiple Choice Questions & Answers

Question 1.
Existence of life depends upon………………….
A. Water
B. Mineral salts
C. Organic molecules
D. All of these
Answer:
D. All of these

Question 2.
Life forms on earth are composed of various………………….
A. Minerals
B. Organic matters
C. Chemical substances
D. Salts and water
Answer:
C. Chemical substances

Question 3.
Most abundant elements of a living body are………………….
A. Carbon, water and oxygen
B. Carbon and nitrogen
C. Water
D. Oxygen, hydrogen, carbon and nitrogen
Answer:
D. Oxygen, hydrogen, carbon and nitrogen

Question 4.
Medium of transportation in plants is………………….
A. Water
B. Phloem
C. Xylem
D. Both A. and B.
Answer:
A. Water

Question 5.
HCl in stomach helps in the digestion of………………….
A. Protein
B. Lactose
C. Maltose
D. Fructose
Answer:
A. Protein

Question 6.
Acidic chyme of stomach is neutralised by………………….
A. Bile salt
B. Sodium bicarbonate
C. NaOH
D. KOH
Answer:
B. Sodium bicarbonate

Question 7.
Percentage of mineral salts present in cellular components is………………….
A. 10-30%
B. 1-3%
C. 0.1-0.3%
D. 0.01-0.03%
Answer:
B. 1-3%

Question 8.
A biomicromolecule is………………….
A. Glucose
B. Peptide
C. Lipid
D. Protein
Answer:
A. Glucose

Question 9.
The main energy generating biomolecule is………………….
A. Protein
B. Carbohydrate
C. Fat
D. Vitamin
Answer:
B. Carbohydrate

Question 10.
A simple carbohydrate molecule present in glycogen is………………….
A. Glucose
B. Fructose
C. Lactose
D. Galactose
Answer:
A. Glucose

Question 11.
The sugar present in milk is………………….
A. Sucrose
B. Maltose
C. Glucose
D. Lactose
Answer:
D. Lactose

Question 12.
Which of the following is not a disaccharide?
A. Lactose
B. Fructose
C. Sucrose
D. Maltose
Answer:
B. Fructose

Question 13.
A polypeptide is composed of many………………….
A. Monosaccharides
B. Proteins
C. Fatty acids
D. Amino acids
Answer:
D. Amino acids

Question 14.
Peptide bonds bind two………………….
A. Fatty acids
B. Amino acids
C. Monosaccharides
D. Proteins
Answer:
B. Amino acids

Question 15.
Nucleic acids are………………….
A. Polymers and amino acids
B. Present only in nucleus
C. Composed of many nucleotides
D. Composed of nucleoproteins
Answer:
C. Composed of many nucleotides

Question 16.
An oligosaccharide molecule is composed of ………………….
A. 1-2 monosaccharides
B. 3-9 monosaccharides
C. Many monosaccharides
D. None of these
Answer:
B. 3-9 monosaccharides

Question 17.
The main component of plant cell wall is………………….
A. Cellulose
B. Glycogen
C. Glucose
D. Lipid and protein
Answer:
A. Cellulose

Question 18.
Starch molecule is formed by………………….
A. Glucose
B. Maltose
C. Galactose
D. Lactose
Answer:
A. Glucose

Question 19.
Chemical name of common table sugar is………………….
A. Glucose
B. Fructose
C. Sucrose
D. Starch
Answer:
C. Sucrose

Question 20.
The main sugar present in honey is ………………….
A. Glucose
B. Fructose
C. Sucrose
D. Maltose
Answer:
B. Fructose

Question 21.
Which of the following carbohydrates is not digested in human intestine?
A. Glycogen
B. Cellulose
C. Maltose
D. Inulin
Answer:
B. Cellulose

Question 22.
The walls of xylem become rigid by………………….
A. Glycogen
B. Chitin
C. Cellulose
D. Lignin
Answer:
D. Lignin

Question 23.
The main component of fungal cell wall is………………….
A. Inulin
B. Chitin
C. Cellulose
D. Pectin
Answer:
B. Chitin

Question 24.
Which of the following is known as animal starch?
A. Glucose
B. Cellulose
C. Inulin
D. Glycogen
Answer:
D. Glycogen

Question 25.
Besides amino group, the other functional group present in an amino acid is………………….
A. Hydroxyl group
B. Carboxyl group
C. Aldehyde group
D. Ketone group
Answer:
B. Carboxyl group

Question 26.
Glycogen and starch are………………….
A. Monosaccharides
B. Disaccharides
C. Oligosaccharides
D. Polysaccharides
Answer:
D. Polysaccharides

Question 27.
Glucose and fructose are………………….
A. Monosaccharides
B. Disaccharides
C. Oligosaccharides
D. Polysaccharides
Answer:
A. Monosaccharides

Question 28.
Which are disaccharides?
A. Glucose and maltose
B. Sucrose and maltose
C. Sucrose and fructose
D. All of these
Answer:
B. Sucrose and maltose

Question 29.
The sugar present in sugarcane juice is ………………….
A. Fructose
B. Glucose
C. Maltose
D. Sucrose
Answer:
D. Sucrose

Question 30.
Structural component of a simple protein molecule is………………….
A. Peptide
B. Peptone
C. Amino acid
D. Nucleic acid
Answer:
C. Amino acid

Question 31.
Which of the following compounds is essentially a protein structure?
A. Hormone
B. Enzyme
C. Co-enzyme
D. Prostaglandin
Answer:
B. Enzyme

Question 32.
The two radicals of a protein molecule are………………….
A. Amino and ketone
B. Amino and carboxyl
C. Carboxyl and aldehyde
D. Aldehyde and ketone
Answer:
B. Amino and carboxyl

Question 33.
Which is not a conjugated protein?
A. Proteose
B. Nucleoprotein
C. Metalloprotein
D. Glycoprotein
Answer:
A. Proteose

Question 34.
Haemoglobin is a………………….
A. Simple protein
B. Conjugated protein
C. Derived protein
D. Colloidal protein
Answer:
B. Conjugated protein

Question 35.
Chromosome is a………………….
A. Combination of many nucleotides
B. Nucleoprotein substance
C. Combination of many proteins
D. Combination of proteins and lipids
Answer:
B. Nucleoprotein substance

Question 36.
Cell membrane is composed of………………….
A. Proteins and lipids
B. Proteins and polysaccharides
C. Proteins, lipids and carbohydrates
D. All of these
Answer:
C. Proteins, lipids and carbohydrates

Question 37.
An essential component of lipid is………………….
A. Nucleic acid
B. Malic acid
C. Fatty acid
D. Amino acid
Answer:
C. Fatty acid

Question 38.
Wax belongs to………………….
A. Carbohydrates
B. Lipids
C. Glycoproteins
D. Lipoproteins
Answer:
B. Lipids

Question 39.
Which of the following is a simple protein?
A. Haemoglobin
B. Nucleoprotein
C. Glycoprotein
D. Globulin
Answer:
D. Globulin

Question 40.
Which of the following is not a fibrous protein?
A. Collagen
B. Haemoglobin
C. Keratin
D. Elastin
Answer:
B. Haemoglobin

Question 41.
Which is a chromoprotein?
A. Gleadin
B. Keratin
C. Haemoglobin
D. Elastin
Answer:
C. Haemoglobin

Question 42.
Which has close association with fibrous protein?
A. Centrosome
B. Golgi body
C. Endoplasmic reticulum
D. Mitochondria
Answer:
A. Centrosome

Question 43.
Each fatty acid has a hydrocarbon chain ending with………………….
A. Hydroxyl group
B. Aldehyde group
C. Ketone group
D. Carboxyl group
Answer:
D. Carboxyl group

Question 44.
Which of the following combinations of vitamins are fat soluble?
A. Vit. A, vit. B and vit. K
B. Vit. A, vit. B and vit. C
C. Vit. A, vit. D and vit. E
D. Vit. B, vit. C and vit. P
Answer:
C. Vit. A, vit. D and vit. E

Question 45.
DNA is a………………….
A. Single stranded chain of nucleotides
B. Double stranded chain of polypeptides
C. Double stranded chain of nucleotides
D. Double stranded chain of amino acids
Answer:
C. Double stranded chain of nucleotides

Question 46.
The nitrogenous base, absent in DNA is………………….
A. Adenine
B. Thymine
C. Uracil
D. All of these
Answer:
C. Uracil

Question 47.
Which combination includes all macroelements?
A. Calcium, magnesium and boron
B. Sodium, potassium and iodine
C. Sodium, molybdenum and iron
D. Potassium, calcium and phosphorus
Answer:
D. Potassium, calcium and phosphorus

Question 48.
A vitamin related to blood coagulation is………………….
A. Vit. A
B. Vit. E
C. Vit. D
D. Vit. K
Answer:
D. Vit. K

Question 49.
Which combination of vitamins and minerals is related to formation of bones and teeth?
A. Vit. A and phosphorus
B. Vit. D and calcium
C. Vit. C and calcium
D. Vit. D and sodium
Answer:
B. Vit. D and calcium

Question 50.
To get vitamin K, you will have to eat………………….
A. Guava
B. Lettuce
C. Butter
D. Tomato
Answer:
B. Lettuce

Question 51.
Pellagra is caused due to the deficiency of………………….
A. Vit. B₂
B. Vit. B₂
C. Vit. B₁
D. Vit. B₁₂
Answer:
B. Vit. B₂

Question 52.
Contraction of muscie is concerned with………………….
A. Collagen
B. Myosin
C. Elastin
D. Keratin
Answer:
B. Myosin

Question 53.
Pernicious anaemia occurs due to deficiency of………………….
A. Vit. B₆
B. Vit. B₅
C. Vit. B₃
D. Vit. B₁₂
Answer:
D. Vit. B₁₂

Question 54.
Number of amino acids taking part in protein synthesis is………………….
A. 10
B. 20
C. 30
D. 40
Answer:
B. 20

Question 55.
The non………………….protein component of a haemoglobin molecule is………………….
A. Magnesium
B. Calcium
C. Copper
D. Iron
Answer:
D. Iron

Question 56.
Which protein is found in our nails and hairs?
A. Keratin
B. Elastin
C. Collagen
D. Globulin
Answer:
A. Keratin

Question 57.
Sulphur………………….containing amino acid is………………….
A. Serine
B. Valine
C. Methionine
D. Isoleucine
Answer:
C. Methionine

Question 58.
An essential amino acid is………………….
A. Valine
B. Glutamic acid
C. Argenine
D. Glycine
Answer:
A. Valine

Question 59.
95 of total vitamin A absorbed in human body is stored in………………….
A. Kidney
B. Lungs
C. Liver
D. Stomach
Answer:
C. Liver

Question 60.
The bond present in protein molecules, is………………….
A. Covalent bond
B. Peptide bond
C. Electrovalent bond
D. Glycosidic bond
Answer:
B. Peptide bond

Question 61.
Which of the following carbohydrates is present in RNA?
A. Ribulose
B. De-oxyribose
C. Ribose
D. None of these
Answer:
C. Ribose

Question 62.
Lipid is an………………….
A. Acidic compound
B. Alcoholic compound
C. Ester
D. Aldehyde
Answer:
C. Ester

Question 63.
An essential fatty acid is………………….
A. Stearic acid
B. Oleic acid
C. Linolenic acid
D. All of these
Answer:
C. Linolenic acid

Question 64.
Simple structural formula of carbohydrate is………………….
A. C_n(H₂O)_n-1
B. (C₆H₁₀O₅)_n
C. (CH₂O)_n
D. R-COOH
Answer:
C. (CH₂O)_n

Question 65.
Simple structural formula of a lipid is………………….
A. C – ROOH
B. R-CHO
C. R-COOH
D. R=CO
Answer:
C. R-COOH

Question 66.
Simple structural formula of an amino acid is………………….
A. R – CHNH₂COOH
B. NH₂-R=CO₂
C. R-COOH
D. R-NH₂Answer:
A. R – CHNH₂COOH

Question 67.
An example of contractile protein is………………….
A. Keratin
B. Collagen
C. Haemoglobin
D. Elastin
Answer:
D. Elastin

Question 68.
One useful lipoprotein for human is………………….
A. LDL
B. HDL
C. VLDL
D. DL
Answer:
B. HDL

Question 69.
A hydrophobic amino acid is………………….
A. Leucine
B. Tyrosine
C. Histidine
D. Serine
Answer:
A. Leucine

Question 70.
Molecules of disaccharides are held together by………………….
A. Hydrogen bond
B. Peptide bond
C. Glycosidic bond
D. Nitrogen bond
Answer:
C. Glycosidic bond

Question 71.
The carbohydrate, which does not belong to the ketose group………………….
A. Erythrose
B. Fructose
C. Xylulose
D. Ribulose
Answer:
A. Erythrose

Question 72.
Sugar present in DNA molecule is composed of………………….
A. 6-Carbon
B. 5-Carbon
C. 4-Carbon
D. 1-Carbon
Answer:
B. 5-Carbon

Question 73.
Purines include………………….
A. Adenine and guanine
B. Thymine and cytosine
C. Thymine and adenine
D. Guanine and cytosine
Answer:
A. Adenine and guanine

Question 74.
In a DNA molecule, hydrogen bonding occurs between………………….
A. Adenine and guanine
B. Thymine and cytosine
C. Adenine and cytosine
D. Guanine and cytosine
Answer:
D. Guanine and cytosine

Question 75.
Nitrogenous base present in both DNA and RNA are………………….
A. Adenine, guanine, cytosine
B. Adenine, guanine, thymine
C. Adenine, thymine, uracil
D. Adenine, guanine, uracil
Answer:
A. Adenine, guanine, cytosine

Question 76.
Chlorosis in plants can be seen in deficiency of………………….
A. Calcium
B. Magnesium
C. Oxygen
D. Sodium
Answer:
B. Magnesium

Question 77.
Highest calorific value is seen in which of the following four nutrients?
A. Protein
B. Carbohydrate
C. Fat
D. Vitamin
Answer:
C. Fat

Question 78.
Name the vitamin that helps in developing immunity against common cough and cold.
A. Retinol
B. Pantothenic acid
C. Ascorbic acid
D. Calciferol
Answer:
C. Ascorbic acid

Question 79.
Which of the following food items should one take to prevent xerophthaimia?
A. Papaya
B. Pulses
C. Carrot
D. Beans
Answer:
C. Carrot

Question 80.
Which vitamin can reduce the chance of foetal death?
A. Vit. B₁₂
B. Vit. E
C. Vit. K
D. Vit. B₆Answer:
B. Vit. E

Question 81.
Hydrolysis of sucrose produces………………….
A. Glucose + Galactose
B. Glucose + Fructose
C. Glucose + Glucose
D. Glucose + Mannose
Answer:
B. Glucose + Fructose

Question 82.
Which combination of elements is widely used in making fertilisers?
A. N, C, H
B. N, P, K
C. N, Fe, Mg
D. Mn, K,C
Answer:
B. N, P, K

Question 83.
A microelement helping in fixation and assimilation of nitrogen………………….
A. Molybdenum
B. Magnesium
C. Manganese
D. Potassium
Answer:
A. Molybdenum

Question 84.
The disease caused by deficiency of iodine is………………….
A. Night blindness
B. Beriberi
C. Goitre
D. Anaemia
Answer:
C. Goitre

Question 85.
The provitamin of vitamin A is………………….
A. Beta carotene
B. Retinol
C. Calciferol
D. Pyrithiamine
Answer:
A. Beta carotene

Question 86.
Contraction of muscles is controlled by………………….
A. Magnesium
B. Calcium
C. Phosphorus
D. Iron
Answer:
B. Calcium

Fill in the blanks:

1. Maltotriose is an example of …………… saccharide.
2. In the process of ……………, fats are hydrolised in presence of alkali to produce soap and glycerol.
3. In 1912, the term ‘vitamin’ was first coined by ……………
4. ‘Biotin’ was previously known as ……………
5. Calorific value of fat is …………… kcal / g.
6. The chemical name of vitamin K is ……………
7. In animals, fat is stored in …………… cell.
8. Name of the protein present in white part of egg is ……………
9. …………… is example of longest chain fatty acid.
10. The vitamin which helps in production of insulin is ……………
11. We get vitamin …………… from Streptomyces griseus.
12. Osteoporosis is caused due to deficiency of …………… in bones.
Answer:
1. Oligo
2. Saponification
3. Casimir Funk
4. Vitamin H
5. 9.3
6. Phylloquinone
7. Adipose
8. Albumin
9. Palmitic acid/Linoleic acid
10. Vitamin C/Ascorbic acid
11. B₁₂
12. Calcium

State True or False

1. Glucose is a pentose sugar. — False
2. C_n(H₂O)_n-1 is the basic molecular formula of oligosaccharides. — True
3. Avitaminosis refers to a state of lacking vitamins. — True
4. Carbonic acid is involved in the transportation of carbon dioxide gas. — True
5. Chemical name of B₁₂ is cyanocobalamin. — True
6. We may suffer from ketosis due to malnutrition of fat. — False
7. Roughage mainly consists of cellulose. — True
8. Disaccharides cannot be hydrolised further to their smaller units. — False
9. Cytosin is a non-nitrogenous base present in DNA. —
10. Vitamin C can be dissolved in water. — True
11. Non-histone proteins are basic in nature. — False
12. In presence of sunlight, vitamin-D is synthesised within human body. — True
13. Dissacharide maltose is present in jaggery. — True
14. Ratio of hydrogen and oxygen present in carbohydrate is 3: 1. — False

Match the columns

Left column	Right column
1. PUFA	A. Deficiency of vitamin A
2. Protein	B. Omega 3-fatty acid
3. Phrynoderma	C. Respiration
4. Pyruvic acid	D. 4.1 kcal/g
	E. Fatty acid

Answer:
1-8; 2-D; 3-A; 4-C

Left column	Right column
1. Peptide bond	A. Claws, horns
2. Keratin	B. Carbohydrate
3. Glycosidic bond	C. Protein
4. Ketohexose	D. Lipid
	E. Fructose

Answer:
1-C; 2-A; 3-B; 4-E

Left column	Right column
1. Hibernation	A. Heating of protein molecule
2, Rancidity	B. Animal cellulose
3. Tunicin	C. Fat provides energy
4. Denaturation	D. Solidified ester
	E. Bad odour from old fat

Answer:
1-C; 2-E; 3-B; 4-A

Left column	Right column
1. Scurvy	A. Osmoregulation
2. Salt	B. Cholesterol
3. Manganese	C. Vitamin C
4. Egg yolk	D. Inuiln
	E. Microelement

Answer:
1-C; 2-A; 3-E; 4-B