Given below is the representation of the extent of global diversity of invertebrates. What groups do the four portions $(a, b, c, d)$ represent respectively?

Given below are two statements.
Statement $I$: $Rauwolfia$ $vomitoria$ found in Himalayan ranges shows variation in potency and concentration of active component reserpine.
Statement $II$: Ecosystem diversity is observed in regions of Rann of Kutch.
In the light of the above statements,choose the correct option.

The World Summit on Sustainable Development held in $2002$ in Johannesburg,South Africa,pledged for:

Which of the following statement$(s)$ is/are correct?
$(i)$ Rich biodiversity is not essential for ecosystem health.
$(ii)$ The current rate of species extinction is $100$ to $1000$ times faster than the pre-human extinction rate.
$(iii)$ Steller's sea cow became extinct due to overexploitation by humans.
$(iv)$ Even if we combine all biodiversity hotspots,they cover less than $2 \%$ of the Earth's land area.
$(v)$ The rate of mass extinction can be completely reduced by strict protection of hotspots.

Match List $I$ with List $II$:

List $I$	List $II$
$A$. Robert May	$I$. Species-Area relationship
$B$. Alexander von Humboldt	$II$. Long term ecosystem experiment using outdoor plots
$C$. Paul Ehrlich	$III$. Global species diversity at about $7$ million
$D$. David Tilman	$IV$. Rivet popper hypothesis

Choose the correct answer from the options given below:

Match the List-$I$ with List-$II$:

List-$I$	List-$II$
$A$. Narrowly utilitarian	$i$. Hot-spot
$B$. Broadly utilitarian	$ii$. Seed bank
$C$. In situ conservation	$iii$. Photosynthesis
$D$. Ex-situ conservation	$iv$. Food and Fibre