Question

internal fertilisation occurs in hen. but hens lay eggs and do not give birth to babies. explain ​

Answer 1

Answer:All birds have internal fertilization but they are Oviparous and lay eggs. Actually mammals and other viviparous organisms have evolved the ability to keep their embryo inside the reproductive tract until the embryo is developed. Birds lay eggs, after fertilization, which contain embryo. Embryo is developed and nourished inside the egg by the help of nutients present.

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Answer 2

Explanation:

Although hens reproduce using internal fertilization, they do not give birth to young ones this is because, just after fertilization, the zygote starts to divide and travels down the Oviduct. While travelling down it forms many protective layers around it which is the hard, protective shell around the hen’s egg.

The hen then lays the egg. The embryo takes about 25 days to develop into a chick. The development of the chick takes place inside the egg shell and hen sits on the eggs and provides warmth to the developing chick. After the chick is completely developed, it bursts open the egg shell. So hens are referred as oviparous organisms.

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