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a. Differentiate oviparous and viviparou...

a. Differentiate oviparous and viviparous with examples.
b. In which of these two types, is the chances of survival of young ones, greater? Why?

Text Solution

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a. Oviparous animals are those which lay eggs, covered by hard calcare-ous shell in a safe place. These eggs after a period of incubation hatch out as young ones.
e.g. Reptiles and birds
Viviparous animals are those which keep the fertilization product - zygote within the body of female organism and after attaining a certain stage of growth are delivered from the body.
e.g. Human beings
b. Viviparous. Because of proper embryonic care and protection inside the body.
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