NEET | 2016Breathing and Exchange of GasesHard

Question

Which one of the following characteristics is not shared by birds and mammals?

Options

A.

Ossified endoskeleton

B.

Breathing using lungs

C.

Viviparity

D.

Warm blooded nature

Solution

Birds are oviparous while mammals are oviparous (prototherians) and viviparous (metatherians and eutherians).

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