Page 20 - Ripples SCIENCE 7 - TEJPUR Edition 2024 Answer Key

2. The simplest form of protein is ....................... .

Ans. amino acid
3. ....................... is the simplest form of carbohydrate.

Ans. Glucose
4. Amoeba digests its food inside ....................... .

Ans. food vacuole
5. Cud-chewing animals are called ....................... .

Ans. ruminants
6. ....................... is the longest part of the alimentary canal.

Ans. Small intestine
7. ....................... is the hardest material present in the body.

Ans. Enamel
C. State whether the following statements are true (T) or false (F).

1. Ruminants can digest cellulose.
2. Canines are used for grinding of food.

3. Source of energy for living beings is food.
4. Digestion in Amoeba takes place in pseudopodia.

5. Humans have 12 molars.

6. Amoeba ingests food by using its pseudopodia.
7. The enzyme present in saliva is called amylase.

Ans. 1. (T) 2. (F) 3. (T) 4. (F) 5. (T) 6. (T) 5. (T)
D. Match the following.

Column A Column B

1. Villi (a) Large intestine
2. Hydrochloric acid (b) Liver

3. Bile (c) Mouth
4. Absorption of water (d) Stomach

5. Salivary glands (e) Small intestine

Ans. 1. (e) 2. (d) 3. (b) 4. (a) 5. (c)
E. Very short-answer questions.

1. In which group of modes of nutrition, would you put an ant on the basis of the food

that it eats?
Ans. Scrapping.

2. Name the organ that helps in manipulating food while chewing.

Ans. The tongue helps in manipulating food while chewing.

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