The plants $Prosopis$ (Khejri),$Acacia$ (Babul),and $Capparis$ (Kair) are representative of which tropical biome?

$A$: Shivering is an adaptation for low temperature.
$R$: Shivering warms up the body.

The $Veldts$ of $Africa$ and the $Pampas$ of $South$ $America$ are examples of which biome?

The biome characterized by a layer of permafrost is known as:

How can seals survive in a polar climate where the temperature prevails below $0^{\circ} C$?

How many of the following statements are correct about niche?
$i$. It denotes the functional role played by an organism.
$ii$. It deals with the flow of energy from one organism to another.
$iii$. As soon as a niche is left vacant,other organisms fill that position.
$iv$. The same niche is shared by two or more species.
$v$. Organisms living in the same habitat differ in their niches.