Q- Why whale is placed in class Mammalia and not in Pisces?
Answer- The whales are placed in class Mammalia and not in Pisces because whales have mammary gland and are viviparous (give birth to young once.
Q- Why whale is placed in class Mammalia and not in Pisces?
Answer- The whales are placed in class Mammalia and not in Pisces because whales have mammary gland and are viviparous (give birth to young once.