which is the viviparous Salman and cobra and salamander and dolphin and baby purse animal
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answer :
baby purse animal and dolphin
Explanation:
mammals
Dolphins are mammals and hence are viviparous. They don't lay eggs like fishes do, instead they directly give birth to young ones. Viviparity refers to the ability of organism to give birth to live offsprings as opposed to Oviparity. Where most of the development takes place within an egg.
As all the nutrition from yolk sac are utilized by the embryo of kangaroo.There is no extra nutrients left for its further development.That's why Mother delivers the prematured baby which crawls down into the pouch and feed through the nipple of mother.It develops further due to breast feeding.Hence kangaroo is viviparous.
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