Chapter 2 - Nutrition in Animals Extra Questions
Fill in the Blanks1. Ingestion is the process of taking food inside the body.
2. Glucose is the simplest form of carbohydrate.
3. Amoeba digests its food inside food vacuole.
4. Animal nutrition includes nutrient requirement, mode of intake of food and its utilisation in the body.
5. Large intestine absorbs water and salts from undigested food.
6. Cud chewing animals are called ruminants.
7. The saliva breaks down the starch into sugars.
8. The digestive juices break down the proteins into simpler substances.
9. The full form of ORS is Oral Rehydration Solution.
10. Starfish feeds on animals covered by hard shells of calcium carbonate.
Answer the following questions:
11. What is the total number of teeth in an adult human?
Answer: In an adult human, there are total 32 teeth.
12. Name the type of carbohydrate that can be digested by ruminants but not by humans. Give the reason also.
Answer: Cellulose is the carbohydrate that can be digested by ruminants but not by humans because humans lack cellulose enzyme required to digest the cellulose.
13. Explain why we should not eat hurriedly.
Answer: We should not eat hurriedly because if we ingest food in hurry or we talk or laugh while eating we experience hiccups, coughing or choking sensation.
14. Name the secretions of stomach which digest food.
Answer: The inner lining of stomach secretes mucous hydrochloric acid and digestive juices.
15. What is assimilation?
Answer: The process by which absorbed food is taken by body cells and is used for energy, growth and repair is called assimilation.
16. Describe alimentary canal briefly.
Answer: Alimentary canal is the tube running from mouth to anus of human and animals here digestion and absorption of food take place.
17. The digestive juices are secreted into which part in amoeba?
Answer: Digestive juices are secreted into the food vacuoles in amoeba.
18. Name the simple forms of carbohydrates, fats and proteins.
Answer: The simple forms of following are listed below:
Carbohydrates - Glucose
Fats - Fatty acids and glycerol
Proteins - Amino acids
Multiple Choice Questions
19. Hydrochloric acid is secreted by
a) linings of small intestine
b) inner lining of stomach
c) pancreas
d) lining of liver
Answer: b) inner lining of stomach
20. Which of the following pair of teeth differ in structure but are similar in function?
a) Canines and incisors
b) Molars and premolars
c) Incisors and molars
d) Premolars and canines
Answer: b) Molars and premolars
21. The acid present in the stomach
a) kills the harmful bacteria that may enter along with the food
b) protects the stomach lining from harmful substances
c) digests starch into simpler sugars
d) makes the medium alkaline
Answer: a) kills the harmful bacteria that may enter along with the food
22. The simplest form of protein is
a) fatty acids
b) glucose
c) glycerol
d) amino acids
Answer: d) amino acids
23. The false feet of Amoeba are used for
a) movement only
b) capture of food only
c) capture of food and movement
d) none of above
Answer: c) capture of food and movement
24. The absorption of nutrients or food components in its simpler form takes place in
a) blood vessels of small intestine wall
b) large intestine wall
c) gall bladder
d) liver
Answer: a) blood vessels of small intestine wall
25. The tip or front of tongue taste
a) sour
b) bitter
c) salt and sweet
d) All of these
Answer: c) salt and sweet
26. The finger-like projection presents on the inner lining of small intestine is called
a) villi
b) stomach
c) rumen
d) diarrhoea
Answer: a) villi
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