Assertion :Tertiary consumers are green plants. Reason: Microorganisms break down the organisms into simpler substances. They are last in the sequence of a food chain.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

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Assertion is incorrect but Reason is correct.

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Both Assertion and Reason are incorrect.

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Solution

The correct option is C Assertion is incorrect but Reason is correct.
Green plants are the producers which synthesize complex substances using sunlight and carbon dioxide in the presence of chlorophyll, therefore the assertion is incorrect.

The microorganisms are the decomposers. They break-down the complex organic substances into simple inorganic substances that go into the soil and are used up once more by the plants. Since they decompose dead organisms, they are found at the end of food chains.

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Reason (R) We cannot determine order from balanced chemical equation.

(a) Both assertion and reason are correct and the reason is correct explanation of assertion
(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

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Reason (R) Order is determined experimentally and molecularity is the sum of the stoichimetric coeffcient of rate determining elementary step.

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