The resource which regulates the flow of energy in desert ecosystem is the availability of
Light
Water
Minerals
Heat
(b)Because in desert areas, amount of water is less.
Two most important factors influencing the life of organisms are
Niche is defined as the
They are dominant plants of the cold desert
Species that can tolerate narrow range of temperature are called $………….$ .
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 $C$
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