Animals that do not maintain a constant body temperature are called.....

The physical space occupied by the organism is called its . . . . . . niche.

Penguins are found in:

Given below are two statements:
Statement $I$: Stenohaline animals tolerate a wide range of salt concentration.
Statement $II$: Euryhaline animals are capable of handling a narrow range of salt concentration.
In the light of the above statements,choose the most appropriate answer from the options given below:

Plants which produce characteristic pneumatophores and show vivipary belong to

Crop plants grown in monoculture are