How is reproduction in mammals different from reproduction in amphibians? Give any two points of difference.

Internal fertilization   External fertilization
Fertilization occurs inside the female's body  Fertilization occurs outside the female's body
Sperms are ejaculated in the form of fluid in  female's body which then combines with egg. The male releases sperm cells onto the eggs which are laid external to the female's body.
Mostly occurs in terrestrial animals and humans Mostly occurs in amphibians and aquatic animals.
The number of sperms and eggs produced is  comparatively less The number of sperms and eggs produced is more in comparison to internal fertilization.
Example: Human beings, Birds

Example: Fishes, Frogs


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