Question

In hens,fertilisation takes place internally but they do not give birth to young ones.chicks r born through eggs.Explain.

Answer 1

A baby chick hatches out of an egg laid by a hen. The development of chicken’s embryo takes place inside the female body. This type of fertilisation is known as internal fertilisation. The male and female gamete fuses inside the female body to form a zygote. The zygote then divides repeatedly and moves down to fallopian tube to form an embryo. During development, the embryo forms several protective layers around it. As a result, a white colour hard shell is formed around the developing embryo. After this, the hen lays a fertilised egg. The parent hen then sits and warms the eggs or keeps them safely in the warm place till they hatch. After three weeks, the chick is completely developed and it bursts open the egg shell.

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Answer 2

I hope it helps you thank you