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

Question

Which one of the following characteristics is not shared by birds and mammals? (A) Breathing using lungs (B) Viviparity (C) Warm blooded nature (D) Ossified endoskeleton

Tardigrade Admin · Accepted Answer

Birds are always oviparous where as prototherian mammals are oviparous while rest of the mammals are viviparous.

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

Breathing using lungs

Viviparity

Warm blooded nature

Ossified endoskeleton

Birds are always oviparous where as prototherian mammals are oviparous while rest of the mammals are viviparous.