Which group of animals exhibits the highest species richness?

In India, $\underline {X}$ number of plant species and more than $\underline {Y}$ number of animal species have been recorded.

Given below are some major species of organisms found in the Amazon rain forest.
$a$. Plants $b$. Mammals $c$. Birds
Considering their numbers present,choose the correct option showing the relationship among these organisms.

The diagram represents the global biodiversity of major plant taxa. Identify $X$ and $Y$ from the given diagram.

How many species of beetles are there on Earth?

The species diversity of animals on earth is (in $;\%$)