The medicinal plant $Rauwolfia$ $vomitoria$ produces which chemical?

$A$ large number of unknown plant and animal species are believed to be in the ...........

Within biological communities,some species are important in determining the ability of a large number of other species to persist in the community. Such species are called

The relationship between species richness and area is described by a straight line on a logarithmic scale using which equation?

What are the regions of high biodiversity that possess high levels of species richness and high degree of endemism called?

The Aravalli hills are located in which state?