Question

Why do excreta have its distinct color?

• A. It is the color of cellulose because all other nutrients in food are fully absorbed leaving behind only fibre.
• B. It is due to the action of bacteria in the large intestine on chyme.
• C. It is because all the water is absorbed by the large intestine.
• D. It is the color of food ingested.

Answer 1

The correct option is B

It is due to the action of bacteria in the large intestine on chyme.

The bacteria in the large intestine break down the remaining nutrients and a small part of the cellulose in the large intestine. The action of bacteria on the chyme changes its color to that of excreta as the chyme makes its way through the large intestine.