| The inner walls of the small intestine have thousands of finger like structures called villi. Consider the following statements about these villi. |
| 1. The villi decrease the surface area for absorption of the digested food. |
| 2. Each villus has a network of thin and small blood vessels close to its surface. The surface of the villi absorbs the digested food materials. |
| 3. The absorbed substances are transported via the blood vessels to different organs of the body where they are used to build complex substances such as proteins. |
| Which of the statements given above are correct? |
A) 1 and 2
B) 2 and 3
C) 1 and 3
D) All of these
Correct Answer: B
Solution :
[b] The villi increase the surface area for absorption of the digested food. It helps in absorbing more food. The other two statements are correct. Each villus has a network of thin and small blood vessels close to its surface, The surface of the villi absorbs the digested food materials. The absorbed substances are transported via the blood vessels to different organs of the body where they are used to build complex substances such as proteins etc.
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