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.
Frequently asked questions
What is the correct answer to this question?
Removal of harmful wastes from the body
Why is this the correct answer?
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.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Life Processes. Topic: Excretion.
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