Page 23 - Science Class 07

B. Fill in the blanks.
1. The diges ve glands secrete _____________ which help in diges on of food.

2. Permanent teeth in men are _____________ in numbers.
3. _____________ rolls the foods into a ball and pushes it into the oseophagus.
4. Food mixes up with gastric juice in the stomach and turns into a watery paste called
_____________ .
5. Pancreas release _____________ juice into the intes ne.

6. Food finally reaches the fourth chamber of stomach of ruminants called _____________ .
C. Differen ate between the following.
1. Inges on and eges on
2. Human being and ruminants

3. Premolar and molar
4. Milk teeth and permanent teeth
D. Match the following columns.

Column I Column II
1. Eges on a. Gastric juice
2. Stomach b. Bile juice
3. Small intes ne c. Bacteria

4. Liver d. Pancrea c juice
5. Pancreas e. Intes nal juice
6. Rumen f. Elimina on of food

E. Write True or False.
1. The heterotrophs are usually free-living and have holozoic mode of nutri on.
2. Milk teeth some mes do not fall and remain ll 50 years.
3. Canines are six in numbers.

4. Bile juice breaks down the fat present in the food and converts it into smaller
molecules to be digested easily.

5. In grass ea ng animals, food from the re culum is sent back to the mouth.
F. Very short answer ques ons.
1. What is assimila on?

2. What is the func on of tongue?
3. What is oesophagus?
4. Where is the liver located inside our body?
5. Name the four chambers present in the stomach of ruminants.

6. What is the func on of rumen?
7. What do you mean by pseudopodia?
G. Short answer ques ons.
1. What is diges ve tract?

Science-7 23