Cud is the name given to the food of ruminants which is (a) swallowed and undigested. (b) swallowed and partially digested. (c) properly chewed and partially digested. (d) properly chewed and completely digested.

Soln:

The answer is (b) swallowed and partially digested.

Explanation:

Ruminants quickly swallow the grass and store it in a part of the stomach called the rumen. Here the food gets partially digested and is called cud. But later, the cud returns to the mouth in small lumps, and the animal chews it. This process is called rumination.