1.      Does the occurrence of the diversity of animals on earth suggest their diverse ancestry also? Discuss this point in the light of evolution.

Soln:

In spite of the fact that animals have a different variety of structures, they do not have a common ancestry. This is because common ancestry may greatly limit the extent of diversity. Many of the animals inhabit the same habitat; their evolution by geographical isolation and speciation is also not likely. Hence, common ancestry for all animals is not the likely theory.