Question

what is difference b/w oviparous and viviparous animals?Explain briefly

Answer 1

Oviparous animals  vs Viviparous animals

Oviparous animals lay fertilized or unfertilized eggs.The fertilized eggs remain covered by hard calcareous shell and laid in safe place in the environment. After a period of incubation young ones hatch out.Chances of survival of young ones is less as the female lay egg in the open environment.Viviparous animals
Viviparous animals birth to young ones.The fertilised egg (zygote) develop into a young one inside the body of the female organism.Chances of survival of young one is more  because of proper embryonic care and protection inside the mother’s body.

Answer 2

animals which gives birth to young once are known as viviparous animals
animals which lay eggs are called oviparous animals......