A) flow of energy
B) cycling of materials
C) Both [a] and [b]
D) None of the above
Correct Answer: C
Solution :
The importance of ecosystem lies in both the flow of energy and cycling of materials. As producers (all green plants) trap solar energy and convert into chemical energy, which is ' transferred to next trophic level as well as the food also passes from one trophic level to next, eg, \[\begin{align} & \underset{\Pr oducers}{\mathop{Green\,grasses}}\,\to \underset{\begin{smallmatrix} \Pr imary \\ consumer \end{smallmatrix}}{\mathop{In\sec ts}}\,\to \underset{\begin{smallmatrix} Secondary \\ consumer \end{smallmatrix}}{\mathop{Frog}}\, \\ & \to \underset{\begin{smallmatrix} Tertiary \\ consumer \end{smallmatrix}}{\mathop{Snake}}\, \\ \end{align}\]
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