Q204. Which one of the following set belongs to the class Mammalia ? (a) Lion Hippopotamus Penguin Bat. (b)Lion Bat Whale Ostrich (c)Hippopotamus Penguin Whale Kangaroo (d)Whale Bat Kangaroo Hippopotamus
Correct Option: D Mammals are members of class Mammalia, airbreathing vertebrate animals characterized by the possession of endothermy, hair, three middle ear bones, and mammary glands functional in mothers with young.
