Assertion :Cellulose is not digested by human beings Reason: Cellulose is a polymer of $β$ -D-glucose

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Assertion is incorrect but Reason is correct

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Both assertion and reason are correct but the reason is not the correct explanation of assertion. The correct explanation for the assertion is that enzymes which hydrolyse $β$ -glycosidic linkages are not present in human beings.
Humans cannot digest cellulose because they lack the enzymes essential for breaking the beta-acetyl linkages. The undigested cellulose acts as fibre that aids in the functioning of the intestinal tract.

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