Select the correct option regarding algal blo | vedclass

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(B) Algal bloom is the excessive growth of planktonic (free-floating) algae in water bodies caused by the presence of high amounts of nutrients,especi

Vedclass · Accepted Answer

$II, III$

Vedclass · Answer

(B) Algal bloom is the excessive growth of planktonic (free-floating) algae in water bodies caused by the presence of high amounts of nutrients,especially nitrogen and phosphorus,which leads to eutrophication.Statement $I$ is incorrect because it mentions 'planktonic fungi' instead of 'planktonic algae'.Statement $II$ is correct as algal blooms impart a distinct color to the water bodies.Statement $III$ is correct because the excessive growth of algae leads to the depletion of dissolved oxygen,causing the death of fish and other aquatic organisms.Statement $IV$ is incorrect because not all bloom-forming algae are toxic to humans and animals; only certain species produce toxins.Therefore,statements $II$ and $III$ are correct.

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