Question

Differentiate between ovipary and vivipary. Cite an example for each type.

Answer 1

The difference between ovipary and vivipary are as follows

Ovipary		Vivipary
1.	In ovipary, animals lay eggs.	In vivipary, animals give birth to young ones.
2.	The eggs are covered by hard calcareous shell.	Ovum are not covered by calcareous shell
3.	The development of zygote takes place outside the female's body.	The development of zygote takes place inside the female's body.
4.	Females lay eggs in a safe place in the environment, but the chances of survival are less e.g., all birds, most of reptiles are egg laying mammals.	Females deliver young ones and the chances of survival are more. e.g., mammals except monotremes egg laying mammals.