Which of the following is a group of invertebrates?
Reptilia
Pisces
Amphibia
Arthropoda
What are differences between the following: (a) Cartilaginous fishes and bony fishes; (b) Amphibia and Reptilia; (c) Aves and 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