More than . . . . . . $\;\%$ of the drugs currently sold in the market worldwide are derived from plants.

About $1000$ different varieties of ..... have been estimated in India.

In a given habitat,we have $20$ plant species and $20$ animal species. Should we call this 'diversity' or 'biodiversity'? Justify your answer.

The following pie chart represents the global biodiversity of invertebrates. Identify the group of Molluscs from the given labels.

Statement $A$: As moving from equator to polar region,species diversity decreases.
Statement $R$: Amazon rain forest of South America has less biodiversity.

Biodiversity in a geographical region represents: