Where is the greatest genetic diversity found in agricultural crops?

Which of the following species is restricted to a specific area?

Identify the correct statements :
$1.$ According to $\text{IUCN} (2004)$,the total number of described species is slightly more than $1.5$ million.
$2.$ Robert May estimated the total species diversity on Earth to be around $7$ billion.
$3.$ Insects make up more than $70 \%$ of all recorded animal species.
$4.$ India,with $2.4 \%$ of the world's land area,contributes $8.1 \%$ to global species diversity.

State the contribution of the following scientists:
$(i)$ Edward Wilson
$(ii)$ Robert May

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

Approximately $.........$ plant species are used by indigenous people around the world in traditional medicines. (in $,000$)