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NEET2016BotanyAnimal KingdomActual

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

Options

  1. AOssified endoskeleton
  2. BBreathing using lungs
  3. CViviparity
  4. DWarm blooded nature

Correct answer

C. Viviparity

Step-by-step solution

Birds are oviparous while mammals are oviparous (prototherians) and viviparous (metatherians and eutherians). Oviparous- producing young by means of eggs which are hatched after they have been laid by the parent, as in birds. Viviparous- bringing forth live young which have developed inside the body of the parent. The only oviparous mammal is platypus.

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