When may dialysis be needed?
Answer and explanation
Correct answer: When kidneys fail to remove wastes from blood
The governing concept is excretion: healthy kidneys filter the blood, remove nitrogenous wastes and excess water, and form urine. If kidney function becomes severely reduced, urea and other wastes can accumulate in the blood. Dialysis uses a semipermeable membrane and special fluid to remove these substances artificially. Therefore option A is correct; the other options describe unrelated normal or plant processes.
Frequently asked questions
What is the correct answer to this question?
When kidneys fail to remove wastes from blood
Why is this the correct answer?
The governing concept is excretion: healthy kidneys filter the blood, remove nitrogenous wastes and excess water, and form urine. If kidney function becomes severely reduced, urea and other wastes can accumulate in the blood. Dialysis uses a semipermeable membrane and special fluid to remove these substances artificially. Therefore option A is correct; the other options describe unrelated normal or plant processes.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Life Processes.
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