The shade-loving plants are called

Write a short note on:
$(a)$ Adaptations of desert plants and animals
$(b)$ Adaptations of plants to water scarcity
$(c)$ Behavioural adaptations in animals
$(d)$ Importance of light to plants
$(e)$ Effect of temperature or water scarcity and the adaptations of animals.

What are Eurythermic species?

Match the following columns:

Column-$I$ (Temperature)	Column-$II$ (Organism)
$P$. Above $100^{\circ}C$	$I$. Thermoacidophiles
$Q$. $37^{\circ}C$	$II$. Human
$R$. Below $0^{\circ}C$	$III$. Antarctic fish

The photic or euphotic zone extends to what depth from the upper surface of the sea?

Mangroves are