Egg laying animals are called:

Non-egg laying animals are called:

In mammals the development of zygote takes place:

Egg’s germinal disc is called:

Egg’s reserve of calcium, permeable to water and air is called:

During incubation, as the mass of egg’s yellow and white …………. the mass of the embryo …………

The hen sits on the fertilized eggs for:

Hen eggs should be incubated at a temperature of:

……….. rich in water, proteins and mineral salts.

…………rich in proteins and lipids.

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