Question

Why frog Lays egg coverless, whereas, Hen lays it with hard cover? Explain

Class - 8 [ Reproduction in animals ]

Answer 1

The hen's egg is covered with a thin layer of calcium carbonate

It is possible for hen to give a suffient amount of calcium to egg but it is not possible for frog

Answer 2

.In frog fertilization takes place outside. And so why frog lay egg cover less then gamate of male and female fertilise outside.
whereas hen egg is fertile inside and in cover protein and needed nutrients are inside to healthy chick
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