Question

Name the five classes of vertebrates. Compare any two on the basis of their : (i) Habitat (ii) Covering of skin (iii) Respiratory organs (iv) Chambers of heart (v) Reproduction

Answer 1

Five classes of vertebrates are:

Pisces, Amphibia, Reptilia, Aves, Mammalia

	Pisces	Amphibia	Reptilia	Aves	Mammalia
Habitat	Aquatic	Both aquatic and terrestrial	Both aquatic and terrestrial	Terrestrial and aerial	Mainly terrestrial
Skin cover	Scales	Mucus gland in skin	Scales	Feathers	Hair
Respiratory organs	Gills	Gills and Lungs	Lungs	Lungs	Lungs
Chambers of heart	2	3	3	4	4
Reproduction	Lay eggs in water	Lay eggs in water	Lay eggs	Lay eggs	Give birth to young ones.