Which one of the following set belongs to the class Mammalia? (1) Lion, Hippopotamus, Penguin, Bat (2) Lion, Bat, Whale, Ostrich (3) Hippopotamus, Penguin, Whale, Kangaroo (4) Whale, Bat, Kangaroo, Hippopotamus
Description : Which one of the following set belongs to the class Mammalia? (1) Lion, Hippopotamus, Penguin, Bat (2) Lion, Bat, Whale, Ostrich (3) Hippopotamus, Penguin, Whale, Kangaroo (4) Whale, Bat, Kangaroo, Hippopotamus
Last Answer : (4) Whale, Bat, Kangaroo, Hippopotamus Explanation: Mammals are members of class Mammalia, air-breathing vertebrate animals characterized by the possession of endothermy, hair, three middle ear bones ... sheep, goats belong to Order Artiodactyla; Order Cetacea: whales, dolphins and porpoises; etc.