Worksheet 21 Life Processes @CBSE TOPPER @ CBSE @NEET Exam 100 % Success

 

Important Q/A

1.How is the wall of small intestine adapted for performing the function of absorption of food?

Ans: The primary function of the smell intestine is the absorption of nutrients and minerals found in food with the help of numerous finger like projections called villi present in the inner lining of small intestine, which increase the surface area of absorption.

2. Out of goat and tiger which one will have a longer small intestine? Justify your answer.

Ans:  Herbivores like goat, need longer small intestine to facilitates the digestion of cellulose, meat is easier to digest hence carnivores like tiger have small intestine.

3. Name the movement of food all along the gut.

Ans: The lining of the alimentary canal has muscles which contract rhythmically to push the food forward. This movement is know as peristalsis.

4. Name the process in plants that links light energy with chemical energy.

Ans: Photosynthesis

5. Name the organisms that can prepare their own food.

Ans: Autotrophs

6. Name the cell organelle where photosynthesis occurs.

Ans: Chloroplast.

7. Name the cells surrounded a stomatal pore.

Ans: Guard cell.

8. Name an enzyme secreted from gastric glands in stomach that acts on proteins.

Ans: Pepsin.

9. Name organisms that cannot prepare their own food.

Ans: Heterotrophs.

10. What do you mean by emulsification of fat?

Ans: Large fat globules are broken down into small uniformly distributed fat particles by the action of bile salts present in bile juice. This is called emulsification of fat.

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Answers : Activity Based Q/A: 100% Success CBSE/NEET EXAM BIOLOGY

1. (b) released carbon di oxide

2. (c) Oxidation of carbon to carbon di oxide

3. (a) starch

4. (b) amylase

5. (d) amino acids