Submerged hydrophytes have commonly dissected leaves for

The figure shows a pyramid of energy which represents energy loss from a food chain to decomposers, upward transfer of energy to the next tropic level, and energy loss through respiration. All diagrams are in ${\mathrm{kKm}}^{-2}{\mathrm{Y}}^{-1}$

What is illustrated in this figure?

Which of the following is correct for r-selected species?

A) Small number of progeny with large size
B) Large number of progeny with small size
C) Large number of progeny with large size
D) Small number of progeny with small size

Assertion: In a food chain members of successively higher levels are fewer in number.

Reason: The number of organisms at any trophic level depends upon the availability of organisms that serve as food at the lower level.

Assertion : The rate of decomposition of detritus is reduced in the regions of high altitude.

Reason : It happens due to immobilisation of nutrients.

Assertion : A network of food chains existing together in an ecosystem is known as a food web.

Reason : An animal like kite cannot be a part of a food web.