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QUESTION
Q512) Read the statements a and b , identify the correct choice
a. Human small intestine is the largest portion in the alimentary canal
b. Absorption of digested food requires a very large surface area

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Correct

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The small intestine is the largest part of the alimentary canal. It is about 6.5 metres long in an adult man. It is known as small intestine because it is very narrow. The small intestine is arranged in the form of a coil in our belly : Statement a is correct
The small intestine has a large internal surface area for absorption to happen quickly and efficiently. This large surface area is due to the presence of many finger-like projections called villi. Statement b is correct .
Answer : (b)