The algae commonly noticed during droughts is
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Chara
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Hydrodictyon
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Chlorella
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Spirogyra
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Filamentous
A
Correct answer
Explanation
Chara often grows at the bottom of lakes in fresh and also some brackish waters one to six metres deep. Chara is common in freshwater areas with silty or sandy beds. It is usually more noticed in droughts when the water level drops.