Q- Why do the whales not grouped in the fishes? Differentiate them.
Answer- The whales are placed in class Mammalia and not in fishes because whales have mammary gland and are viviparous (give birth to young once.
Q- Why do the whales not grouped in the fishes? Differentiate them.
Answer- The whales are placed in class Mammalia and not in fishes because whales have mammary gland and are viviparous (give birth to young once.