1.

in hens fertilization takes place internally but they do not give birth to young ones chicks are born through eggs explain

Answer»

When the hard shell is completely formed AROUND the developing EMBRYO, the hen lays the egg. the embryo takes about THREE week to develop into a chick. the hen provides sufficient warmth to the egg by SITTING on the egg . During this period ( called incubation) the chick develops inside the egg. After the chick is completely developed it brust open the egg shell.

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