Select the character which is not common to the given animal group.
A They all breathe through lungs.
B They have hair on their body.
C Internal fertilization takes place in them.
D They all give birth to young ones.
I think answer should be A , Platypus lay eggs and do not give birth to young ones
they all are mammals and give birth to young ones whereas dolphin and whales do not have hairs on their body
bat has microscopic hair, bear has fur, dolphin has hair when it is a baby, platypus has hair. platypus also lays eggs. so d is the answer
Why will the answer be D? The animals are dolphin, whale, bat, bear and platypus, and they are all mammals and give birth to young ones. This is a common feature, but the question says to mention the uncommon feature. The answer should be C for sure. The solution given is wrong.