Question

Read the following statements with reference to the villi of small intestine.

1. They have very thin walls.
2. They have a network of thin and small blood vessels close to the surface.
3. They have small pores through which food can easily pass.
4. They are finger-like projections

Identify those statements which enable the villi to absorb digested food.

पर्याय

• (i), (ii) and (iv)

• (ii), (iii) and (iv)

• (iii) and (iv)

• (i) and (iv)

Answer 1

(i), (ii) and (iv)

Explanation:

Villi are the numerous, small finger-like projections present in the inner walls of the small intestine. Villi increase the surface area of small intestine for absorption of digested food due to their thin, finger-like shape. Each villus has a network of thin and small blood vessels close to its surface. The food absorbed on the surface of villus passes into the blood in the capillaries. Villi do not have any pores.