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  • Assertion (A): The small intestine absorbs the majority of nutrients throughout the digestive process. Reason (R): Because of the exi

Assertion (A): The small intestine absorbs the majority of nutrients throughout the digestive process.

Reason (R): Because of the existence of villi and microvilli, the small intestine has a vast surface area for 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

It is accurate to say that the majority of nutrient absorption occurs during digestion in the small intestine. The small intestine is the principal site of nutrient absorption and the location of most of the chemical digestion of meals. The small intestine's walls allow the nutrients to enter the circulation.

The existence of villi and microvilli contributes to the small intestine's vast surface area for absorption, which is likewise true and offers the proper justification for the claim. The small intestine's walls have projections called villi that resemble fingers, and microvilli are even smaller projections that stick out from the villi's surface. Together, they significantly increase the small intestine's surface area, facilitating the effective absorption of nutrients into circulation. Because a big surface area makes it easier for nutrients to be absorbed through the small intestine's walls via diffusion and active transport, a large surface area is required.

Therefore, option 2 is the correct answer which states that both Assertion (A) and Reason (R) are true but Reason (R) is not a correct explanation of Assertion (A).
 

 

 

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Anam Khan

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