MCQ Questions for Class 7 Science Chapter 2 Nutrition in Animals
1. What is the process of taking food into the body called?
A. Digestion
B. Assimilation
C. Ingestion
D. Egestion
2. Which organ stores bile juice?
A. Liver
B. Stomach
C. Gallbladder
D. Pancreas
3. Where does partial digestion take place?
A. Small intestine
B. Stomach
C. Large intestine
D. Oesophagus
4. What is the role of salivary amylase?
A. Breaking down fats
B. Breaking down starch
C. Breaking down proteins
D. Breaking down sugars
5. What is the function of villi in the small intestine?
A. Absorption
B. Digestion
C. Egestion
D. Assimilation
6. Which organ is responsible for complete digestion and absorption of food?
A. Stomach
B. Liver
C. Small intestine
D. Large intestine
7. What is the purpose of mucus in saliva?
A. Breaking down starch
B. Easy passage of food
C. Absorption
D. Egestion
8. Where does absorption of water and salt from undigested food occur?
A. Small intestine
B. Stomach
C. Large intestine
D. Oesophagus
9. What is the role of bile in digestion?
A. Breaking down starch
B. Breaking down proteins
C. Breaking down fats
D. Breaking down sugars
10. What is the process of removing fecal matter from the large intestine called?
A. Digestion
B. Ingestion
C. Egestion
D. Assimilation
11. How long is the small intestine?
A. 7.5 meters
B. 1.5 meters
C. 2 meters
D. 5 meters
12. Which glands secrete saliva into the mouth?
A. Pancreas
B. Liver
C. Salivary glands
D. Gallbladder
13. What is the function of the anus in the digestive tract?
A. Absorption
B. Assimilation
C. Egestion
D. Ingestion
14. Where does the breakdown of complex components of food into simpler substances occur?
A. Stomach
B. Small intestine
C. Oesophagus
D. Large intestine
15. What is the primary role of the gallbladder?
A. Storage of bile
B. Digestion of proteins
C. Absorption of water
D. Egestion
16. Which organ is wider and shorter than the small intestine?
A. Stomach
B. Large intestine
C. Liver
D. Pancreas
17. What is the inner wall outgrowth in the small intestine called?
A. Villi
B. Mucous
C. Ducts
D. Amylase
18. What substance is responsible for breaking down starch in the digestive process?
A. Mucous
B. Bile
C. Salivary amylase
D. Villi
19. What process involves the utilization of absorbed substances to build complex substances like proteins?
A. Ingestion
B. Digestion
C. Assimilation
D. Egestion
20. What is the term for the removal of fecal matter from the large intestine?
A. Digestion
B. Ingestion
C. Egestion
D. Assimilation
21. How is food moved through the digestive tract?
A. Peristalsis
B. Diffusion
C. Osmosis
D. Filtration
22. What is the role of the liver in digestion?
A. Absorption of water
B. Secretion of bile
C. Production of saliva
D. Breaking down starch
23. Which enzyme is responsible for breaking down proteins in the digestive process?
A. Mucous
B. Salivary amylase
C. Bile
D. Pepsin
24. How is digested food transferred to the body via blood vessels?
A. Peristalsis
B. Villi
C. Osmosis
D. Diffusion
25. What is the opening at the end of the human digestive tract called?
A. Oesophagus
B. Anus
C. Stomach
D. Rectum
26. Where does the process of digestion begin in the human digestive system?
A. Stomach
B. Small intestine
C. Mouth
D. Large intestine
27. What is the primary function of the pancreas in the digestive system?
A. Absorption of water
B. Production of saliva
C. Secretion of insulin and digestive enzymes
D. Storage of bile
28. What substance is responsible for neutralizing the acidic chyme entering the small intestine?
A. Bile
B. Saliva
C. Pancreatic juice
D. Gastric juice
29. Which part of the digestive system is responsible for the mechanical breakdown of food through muscular contractions?
A. Small intestine
B. Stomach
C. Large intestine
D. Oesophagus
30. What is the purpose of the oesophagus in the digestive process?
A. Absorption
B. Assimilation
C. Egestion
D. Transportation of food to the stomach
31. What is the role of gastric glands in the stomach?
A. Absorption of water
B. Production of bile
C. Secretion of gastric juice
D. Synthesis of enzymes
32. Which nutrient is primarily absorbed in the stomach?
A. Proteins
B. Carbohydrates
C. Fats
D. Water
33. What is the term for the involuntary wave-like movements that propel food through the digestive tract?
A. Peristalsis
B. Diffusion
C. Osmosis
D. Filtration
34. What enzyme, produced in the stomach, is responsible for the initial breakdown of proteins?
A. Salivary amylase
B. Pepsin
C. Pancreatic lipase
D. Bile
35. How is bile transported from the liver to the gallbladder?
A. Blood vessels
B. Ducts
C. Lymphatic system
D. Nervous system
36. What is the chamber where grass-eating animals store swallowed grass for partial digestion called?
A. Oesophagus
B. Stomach
C. Rumen
D. Large intestine
37. What term is used to describe the process of grass-eating animals regurgitating cud for further chewing?
A. Rumination
B. Digestion
C. Phagocytosis
D. Absorption
38. What is the main component of grass that undergoes complete digestion in the small intestine of grass-eating animals?
A. Proteins
B. Carbohydrates
C. Cellulose
D. Fats
39. What is the term for partially digested food returned from the rumen into the mouth for further chewing?
A. Cud
B. Rumen
C. Phagocytosis
D. Digesta
40. What is the process by which cattle regurgitate and masticate previously consumed feed called?
A. Rumination
B. Absorption
C. Digestion
D. Ingestion
41. In grass-eating animals, what helps in the complete digestion of cellulose, the main component of grass?
A. Short small intestine
B. Large stomach
C. Long small intestine
D. Absence of rumen
42. What is the microscopic, single-celled organism found in pond water mentioned in the passage?
A. Bacteria
B. Amoeba
C. Cattle
D. Grass
43. How does Amoeba capture food particles?
A. Using teeth
B. With the help of pseudopodia
C. Through rumination
D. By regurgitation
44. What is created when Amoeba captures food particles, and digestive juices are produced into it?
A. Cud
B. Rumen
C. Food vacuole
D. Phagocytosis
45. How does Amoeba release undigested food into the surrounding water?
A. Through the anus
B. Via the mouth
C. Opening the food vacuole
D. Regurgitation
Answers
1. C. Ingestion
2. C. Gallbladder
3. B. Stomach
4. B. Breaking down starch
5. A. Absorption
6. C. Small intestine
7. B. Easy passage of food
8. C. Large intestine
9. C. Breaking down fats
10. C. Egestion
11. A. 7.5 meters
12. C. Salivary glands
13. C. Egestion
14. B. Small intestine
15. A. Storage of bile
16. B. Large intestine
17. A. Villi
18. C. Salivary amylase
19. C. Assimilation
20. C. Egestion
21. A. Peristalsis
22. B. Secretion of bile
23. D. Pepsin
24. B. Villi
25. B. Anus
26. C. Mouth
27. C. Secretion of insulin and digestive enzymes
28. C. Pancreatic juice
29. B. Stomach
30. D. Transportation of food to the stomach
31. C. Secretion of gastric juice
32. A. Proteins
33. A. Peristalsis
34. B. Pepsin
35. B. Ducts
36. C. Rumen
37. A. Rumination
38. C. Cellulose
39. A. Cud
40. A. Rumination
41. C. Long small intestine
42. B. Amoeba
43. B. With the help of pseudopodia
44. C. Food vacuole
45. C. Opening the food vacuole