Question

Explain how animals in vertebrate are classified into further subgroups

Answer 1

Vertebrates are further classified according to several criteria like exoskeleton, respiratory organs, method of giving birth, number of chambers in heart, mode of living etc. They are further classified into classes Pisces, Amphibia, Reptilia, Aves and Mammals. Pisces include the fishes

Answer 2

Animals of vertebrata are further classified into sub-groups on the basis of following features:

1) Nature of heart(two, three or four chambered).

2)Presence of exoskeleton eithier in the form of scales, feather or hair

3) Mode of respiration (By skin ,lungs or gills

4) Presence of mammary glands.

5)Reproduction (Egg laying or give birth to young once