Question

give reason (1) man cannot digest cellulose fibres present in the food.
(only correct answer) no irrelevant answer ​

Answer 1

Answer:

Humans are unable to digest cellulose because of the absence of appropriate enzymes (cellulose) to break down the beta acetal linkages. Undigestible cellulose is the fiber which aids in the smooth working of the intestinal tract.

Explanation:

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Answer 2

Answer:

it's cuz we don't have that particular type of digestive system which can digest tough cellulose! Actually those animal which can digest tough cellulose have a bacteria in their digestive system, this bacteria digests the cellulose! we humans don't have that bacteria in our digestive system, so we can't digest cellulose fibre