Which of the following organisms can ensure constant body temperature and osmotic concentration by physiological and behavioural changes?

Assertion $A$: Aquatic organisms do not experience mechanical shocks while swimming in water.
Reason $R$: Water is a liquid medium for swimming.
Which option is correct for Assertion $A$ and Reason $R$?

When an organism moves away temporarily from a stressful habitat to a more hospitable area and returns when the stressful period is over,what is this process called?

Which biome is characterized by evergreen vegetation and drought-adapted animals?

Consider the following four conditions $(i-iv)$ and select the pair that represents the adaptation of desert lizards to their environment.
$(i)$ Burrowing into the soil to escape high temperatures.
$(ii)$ Rapidly losing body heat during high temperatures.
$(iii)$ Basking in the sun and absorbing heat when the temperature is low.
$(iv)$ Insulating the body due to a thick layer of fat.

Large woody vines are commonly found in .......