Internal fertilisation=the fertilisation which take place inside the female body. ·Eg.humans, cows, dogs and hen. ·The fertilisation where female and male gamete take place inside the female body. External fertilisation= the fertilisation which take place outside of female body. ·this type fertilisation the fusion of male and female gamete takes place outside the female body. ·Ex.fish,starfish etc. Hope it work😘😘