The given diagram shows (I, II, III and IV) the flow of materials between different trophic levels. Which arrow is incorrect ?
A
III
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B
I
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C
IV
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D
II
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Solution
The correct option is A III In the detritus food chain producer never dependent on decomposer for energy, hence option 3 is incorrect.
A food chain describes how energy and nutrients move through an ecosystem. At the basic level there are plants that produce the energy, then it moves up to higher-level organisms like herbivores.