Question

what is Internal fertilisation and External fertilisation​

Answer 1

Answer:

Internal fertilisation - If the fusion takes place within the female parent, it is called internal fertilization.

Ex - Cats, lions, pigs, dogs, hens, etc.

External fertilisation - When the fusion of sperm and egg takes place outside the female parent, it is called external fertilization.

Ex - Fish, frogs, etc.

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Answer 2

Answer:

* fertilisation → it is the process of fusion of male gametes ( sperm) with female gamete ( ovum).

it is of two types:

internal fertilisation → when fertilisation takes place inside the body of female , it is called internal fertilisation . eg : human, cow etc

* external fertilisation → when the fertilisation takes place outside the body of female , it is called external fertilisation. eg , frog, fish., etc.