Based on the given assertion and reason, choose the right option. Assertion [A]: Decomposers are excluded from the food chains. Reason [R]: Decomposers act at all trophic levels of food chains.
A
Both the A and R are true and R explains A
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B
Both A and R are true and R does not explain A
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C
A is true and R is false
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D
Both A and R are false
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Solution
The correct option is A Both the A and R are true and R explains A Trophic level represents the position of an organism in a particular food chain. Decomposers do not occupy a specific level in the food chain as their source of energy can be any organism at any trophic level. Hence, decomposers may be excluded from the food chains.