The measure of the variety of species and their relative abundance present within a region is referred to as

Read the following statements carefully and mark the correct option given below.
Statement-$I$: India is one of the $12$ mega diversity countries of the world.
Statement-$II$: India has only $2.4 \%$ of the world's land area.

According to the representation of global biodiversity proportions for the number of species of major taxa of vertebrates,select the appropriate option for the labels $X$,$Y$,and $Z$ in the given figure.

Define the following terms:
$1$. Biodiversity
$2$. Species diversity

India covers the world land area of . . . . . . and contributes the global diversity of . . . . . . .

Which sample area shows maximum diversity?