How many biogeographical regions are present in India?

Correct option is A

India is divided into 10 by geographical regions, India with only 2.4 % of the world's land area possesses 8.1% species diversity of the world due to varying physical conditions and species grouping, it is because India is one of the twelve Mega diversity countries of the world, there are nearly 45,000 species of plants and twice as many animal species.