Offsprings of oviparous animal are at greater risk of survival as compared to those of viviparous animals because

Options

A. proper embryonic care and protection is absent
B. embryo does not develop completely
C. progenies are of smaller size
D. genetic variations do not occur.

Answer

a

Explanation

In oviparous animals such as reptiles and birds, fertilised eggs are covered by hard calcareous shell and are laid ini a safe place. After icubation period, young ones hatch out. In viviparous animals swuch as majority of mammals including human beings, the zygote develops into a young one inside the body of the female individual after a certain growth, the young ones are dilivered by the female induvidual. Due to proper care and protection, the chances of survivial of young ones are more in vivparous individuals.