Assertion :Coral reefs serve as stable marine ecosystems Reason: These are formed by accumulation of debris

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 correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is C Assertion is correct but Reason is incorrect
Coral reefs are stable marine ecosystems.
They are exclusively diverse ecosystems that include corals, fishes, Echinoderms, crustaceans, big fishes like sharks, sea weeds, etc.
They are not formed by accumulation of debris.
They are formed when a huge number of coral polyps are held together by significant amounts of calcium carbonate which makes it a stable system.
So the correct answer is 'Assertion is correct but reason is incorrect'.

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