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  • Assertion (A): Circular folds, villi, and microvilli are all significant features in the small intestine. Reason (R): These structure

Assertion (A): Circular folds, villi, and microvilli are all significant features in the small intestine.

Reason (R): These structures improve the surface area of the small intestine for nutrition absorption.

Option: 1

Both Assertion (A) and Reason (R) are the true and Reason (R) is a correct explanation of Assertion (A).


Option: 2

 Both Assertion (A) and Reason (R) are the true but Reason (R) is not a correct explanation of Assertion (A).


Option: 3

 Assertion (A) is true and Reason (R) is false.


Option: 4

 Assertion (A) is false and Reason (R) is true.


Answers (1)

best_answer

The circular folds, villi, and microvilli increase the surface area of the small intestine by about 600 times, allowing for more efficient absorption of nutrients from the digested food. The circular folds are large folds of the intestinal wall, while the villi are finger-like projections on the surface of the circular folds, and the microvilli are tiny, hair-like projections on the surface of the villi. Together, these structures form a highly specialized and efficient surface for nutrient absorption in the small intestine

The assertion is true, and the reason is also true and explains why these structures are important. Hence, the correct answer is option 1. 

Posted by

Ritika Kankaria

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