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Question
Assertion :Eutrophication shows increase in productivity in water. Reason: With increasing eutrophication, the diversity of the phytoplankton increases.
Assertion :Eutrophication shows increase in productivity in water. Reason: With increasing eutrophication, the diversity of the phytoplankton increases.
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Solution
The correct option is C Assertion is correct but Reason is incorrect.
Eutrophication is a condition where the excessive richness in the environment leads to overgrowth of the plants in the water bodies. As the lakes fertility increases, algal bloom occurs. Algal bloom causes the deterioration of water quality and fish mortality and dead remains begin to be deposited on the lake bottom. Over the year, the lake is finally converted into the land. In eutrophication, a single species grows enormously which leads to decrease in biodiversity. Thus, the correct answer is option B.
Eutrophication is a condition where the excessive richness in the environment leads to overgrowth of the plants in the water bodies. As the lakes fertility increases, algal bloom occurs. Algal bloom causes the deterioration of water quality and fish mortality and dead remains begin to be deposited on the lake bottom. Over the year, the lake is finally converted into the land. In eutrophication, a single species grows enormously which leads to decrease in biodiversity. Thus, the correct answer is option B.
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