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Reproduction in organisms — BIOLOGY STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYReproduction in organisms5 Marks
Question
Differentiate between: Ovipary and Vivipary. Cite an example for each type.
✓

Answer

Based on whether the zygote develops outside the body of female parent or inside, animals can be classified into oviparous and viviparous, respectively.
S. No.
Oviparous animals
Viviparous animals
(i)
Oviparous animals lay fertilized eggs.
Viviparous animals give birth to young ones.
(ii)
The fertilized eggs have calcareous shell ans young ones hatch out after a period of incubation.
The fertilized egg (zygote) has no shell and develops into a young one inside the body of the female organism.
(iii)
Chances of survival of young one is less as the female lays egg in the environment.
Chances of survival of young one is more because of proper embryonic care and protection inside the mother's body.
(iv)
For example, reptile, birds, ets.
For example, majority of mammals including humans.

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