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

Who proposed the rivet popper hypothesis?

Given below is the representation of the extent of global diversity of vertebrates. What groups do the portions represent?

Diversity index commonly used in ecological studies is

Which of the following hypotheses suggests that ecosystems are like aeroplane wings, where the flight (ecosystem functioning) may or may not be compromised depending upon which species are being lost?

Match the following taxonomic groups with their approximate species proportion:

Column-$A$ (Taxonomic Group)	Column-$B$ (Proportion of total species)
$A$. Animals	$1$. More than $70\%$
$B$. Plants	$2$. Around $22\%$
$C$. Insects	$3$. More than $70\%$ of total animals
$D$. Fungi	$4$. More than combined fish,amphibians,reptiles $\&$ mammals