$A$ kind of similarity found in polar regions and high altitudes is

Which of the following ecological factor exerts a direct effect

Edaphology is the relationship between

In bacteria, fungi and lower plants, various of thick-walled …$A$… are formed, which help them to survive …$B$… conditions-these germinate on availability of suitable environment. In higher plants …$C$… and some other vegetative reproductive structures serve as means to tide over periods of stress besides helping in dispersal-they germinate to form new plants under favourable moisture and temperate conditions

Choose the correct option for $A, B$ and $C$

How is diapause different from hibernation?