Assertion: Eutrophication shows an increase in productivity in water.
Reason: With increasing eutrophication, the diversity of the phytoplankton increases.

If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.

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If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.

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If Assertion is correct but Reason is incorrect.

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If Assertion is incorrect but Reason is correct.

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Solution

The correct option is B
If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.

Assertion: Eutrophication shows an increase in productivity in water.
A process in which the water body becomes highly enriched with nutrients is called eutrophication.
It increases the productivity of water by providing nutrients to the growth of plants and algae.
Reason: With increasing eutrophication, the diversity of the phytoplankton increases.
Phytoplankton are autotrophic organism that increases with an increase in eutrophication.
Final answer: B. Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.

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