Which of the following sets of animals give birth to young ones?
A. Platypus, Penguin, Bat, Hippopotamus.
B. Shrew, Bat, Cat, Kiwi.
C. Kangaroo, Hedgehog, Dolphin, Loris.
D. Lion, Bat, Whale, Ostrich.
Correct Answer :
C. Kangaroo, Hedgehog, Dolphin, Loris.
Penguin, kiwi and ostrich all belongs to class Aves (i.e. birds) of chordata and they do not give birth to their young ones, they are oviparous while kangaroo, hedgehog, dolphin and loris, all belong to class mammalia and are viviparous.