Question

1.What are villi? what is their function.
2. What is phagocytosis?
3. Name the enzyme present in saliva.
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Answer 1

AnswEr-

1. Villi are finger like projections of mucosa in the entire intestinal region of alimentary canal .These villi increase the surface area , which help in better digestion and absorption of food materials.

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2. The intake of materials by the cell in the solid form is called phagocytosis.

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3. Ptyalin (or salivary gland)

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Answer 2

Answer:

1. villi are finger like structure , present in small intestine

functions : -- they helps in absorption of food into the blood

--- they increase the surface area of small intestine so the food's nutrition can be absorbed easily and rapidly

2. phagocytosis means to eat something thoroughly .

3. enzyme which is present in saliva is SALIVARY AMYLASE .