Question

Humans cannot digest cellulose like cattle do because:

• A. They have a smaller stomach.
• B. They do not have cellulose-digesting bacteria in their stomach.
• C. They do not consume cellulose.
• D. They have less digesting capacity than ruminants.

Answer 1

The correct option is B They do not have cellulose-digesting bacteria in their stomach.

Food is stored in the plants as cellulose. Cellulase is an enzyme synthesized by bacteria in stomach of ruminant which is used to digest cellulose. Humans do not have cellulase and hence they cannot digest cellulose.

So, the correct answer is option B.