How many varieties of rice have been estimated to be present in India?

Which of the following is $NOT$ a characteristic of a biodiversity hotspot?

Among animals,more than $70\%$ are insects; that means out of every $10$ animals on this planet,.......... are insects.

Where is the highest genetic diversity in agricultural crops found?

$(1)$ More than $\underline A\%$ of the drugs currently sold in the market worldwide are derived from plants.
$(2)$ Although all the biodiversity hotspots put together cover less than $\underline B\%$ of Earth's land area,the number of species they collectively harbour is extremely high,and strict protection of these hotspots could reduce the ongoing mass extinction by almost $\underline C\%$.

Which of the following regions is $NOT$ a biodiversity hotspot?