The reasons behind conserving biodiversity can be grouped into categories,which includes?
$I$. Broadly utilitarian
$II$. Narrowly utilitarian
$III$. No utilitarian
$IV$. Ethical utilitarian
Choose the correct option.

Even if all the biodiversity hotspots are put together,they cover less than $2 \%$ of the Earth's land 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.

The number and types of organisms present on Earth constitute ...... .

Which of the following is considered a hot-spot of biodiversity in India?

The largely tropical ............. rain forest in South America has the greatest biodiversity on earth.