WBBSE Class 9 Life Science MCQ Questions Chapter 3.3 Nutrition

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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

WBBSE Class 9 Life Science MCQ Questions Chapter 3.3 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

WBBSE Class 9 Life Science MCQ Questions Chapter 3.3 Nutrition

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

WBBSE Class 9 Life Science MCQ Questions Chapter 3.3 Nutrition

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

WBBSE Class 9 Life Science MCQ Questions Chapter 3.3 Nutrition

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

WBBSE Class 9 Life Science MCQ Questions Chapter 3.3 Nutrition

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

WBBSE Class 9 Life Science MCQ Questions Chapter 3.3 Nutrition

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

WBBSE Class 9 Life Science MCQ Questions Chapter 3.3 Nutrition

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

WBBSE Class 9 Life Science MCQ Questions Chapter 3.3 Nutrition

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 :

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

Answer:

  1. Nutrition
  2. Tip
  3. Saprophytic
  4. Six
  5. Proteolytic
  6. Sucking root
  7. Amoeba
  8. Iodine
  9. Caecum
  10. Five
  11. Tentacles
  12. Glycogen
  13. Milk
  14. Right
  15. Sucrose

WBBSE Class 9 Life Science MCQ Questions Chapter 3.3 Nutrition

State true or false :

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

Answer:

  1. False
  2. True
  3. True
  4. False
  5. True
  6. False
  7. True
  8. False
  9. False
  10. True
  11. False
  12. True
  13. True
  14. False
  15. 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

WBBSE Class 9 Life Science MCQ Questions Chapter 3.3 Nutrition

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

WBBSE Class 9 Life Science MCQ Questions Chapter 3.3 Nutrition

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

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