Question

Choose the correct statement.

• A. In viviparous animals, the fertilised eggs are covered by a hard calcareous shell
• B. The chances of survival of young ones are greater in oviparous organisms
• C. In viviparous animals, the development of zygote is inside the body of female organism
• D. Reptiles, birds and mammals are viviparous

Answer 1

The correct option is C In viviparous animals, the development of zygote is inside the body of female organism

Viviparous animals are those organisms which give birth to young ones. The development of the zygote takes place inside the body of the female parent.
Example: Majority of mammals.

Oviparous animals are those organisms that lay fertilised/unfertilised eggs. The development of the zygote takes place outside the body of the female parent in these organisms. The fertilised eggs of oviparous animals are covered by a hard calcareous shell. In oviparous organisms, as the embryonic development is outside the body of the parent, the chances of survival of young ones is less. Example: Fishes, amphibians, reptiles, birds, etc.