A student observed that birds sit on their eggs before the eggs are hatched into young ones. The reason is

The white part in the egg is called

In the above diagram of life cycle of a butterfly, in which stage does the organism cover itself in a cocoon?

The following are the names of organisms and names of their "babies". Which one of them is NOT true?

What does an egg yolk contain that gives energy to embryo?

In the egg stage of an organism, energy is obtained from

Which one of the following reproduces by laying eggs?

A dolphin is

Which one of the following reproduce by laying eggs?

The eggs of fish are called