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What is the meaning of excretion?

Answer and explanation

Correct answer: Removal of harmful wastes from the body

The governing concept is removal of metabolic waste. Cellular reactions produce substances such as carbon dioxide, nitrogenous wastes, and excess water or salts; if they accumulate, they can harm the body. Their removal is called excretion, making option A correct. Taking in food is ingestion, pumping blood is circulation, and making oxygen is not the meaning of excretion.

Related tags

ExcretionMetabolic WasteLife ProcessesScienceClass 10 Mcq

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