$IUCN$ Red List $(2004)$ documents the extinction of $\underline{A}$ species in the last $\underline{B}$ years.

How many gymnosperm species are facing the threat of extinction (in $\%$)?

The impacts of loss of biodiversity may lead to:
$I$. Lowered resistance to environmental perturbation
$II$. Decrease in plant production
$III$. Increased variability in ecosystem processes like water use,pest/disease cycle,and plant productivity
$IV$. Increase in plant production
Choose the correct option.

According to the $IUCN$ Red List $(2004)$,how many species have become extinct in the last $500$ years?

In the last $500$ years,$784$ species have gone extinct,out of which .............. species of vertebrates were extinct.

Choose the incorrect pair of extinct animal and their country from the following.