.......... lays eggs as reptiles but has mammary glands and hair on the skin like mammals.
Column I Column IIa) Pisces1.Gills in larva,lungs in most adultsb) Amphibia2.Exoskeleton of hair,have mammary glandc) Reptilia3.Exoskeleton of feathers,lay eggs outside waterd) Aves4.Exoskeleton of scales ,breathe through gillse) Mammalia5.Exoskeleton of scales,lay eggs outside water