In plants,which of the following explains their functions and characteristics?

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

Species which occupy a similar ecological niche in similar communities occupying different biogeographical regions are called:

Which of the following areas are used as habitats by organisms?
$I -$ Scorching deserts
$II -$ Rain-soaked rainforests
$III -$ Rushing streams
$IV -$ Deep ocean trenches
$V -$ Polar regions
$VI -$ High mountain tops
$VII -$ Thermal springs
$VIII -$ Stinking compost pits
$IX -$ Our intestine

The region consisting of long and severe winters and a growing season consisting of a few months of summers constitutes:

Behavioural adaptations to the environment in desert lizards are:
$I.$ Burrowing into the soil
$II.$ Losing heat during high temperature
$III.$ Active during morning and evening
$IV.$ Insulating body due to thick fatty dermis
Select the correct pair.