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