Ectothermic animals are also called
Poikilothermal
Cold-blooded
Both $(a)$ and $(b)$
Isothermic
Loss of upper fertile layer of soil is known as
Number of endangered species of angiosperms in India is
Assertion : Thick cuticle is mostly present in disease resistant plants.
Reason : Disease causing agents cannot grow on cuticle and cannot invade the cuticle.
Aerenchyma is the characteristics feature of
Permafrost condition is characteristic feature of