In which condition is dialysis useful?
Answer and explanation
Correct answer: When kidneys cannot filter blood properly
The governing concept is excretion: healthy kidneys filter the blood and remove nitrogenous wastes, excess salts, and water to form urine. If the kidneys fail to perform this function adequately, harmful wastes accumulate in the body. During dialysis, a machine passes the patient’s blood through a selectively permeable membrane, removes wastes and excess fluid, and returns the cleaned blood. Therefore, option A is correct; the other options describe digestion, breathing, or plant nutrition, not kidney failure.
Frequently asked questions
What is the correct answer to this question?
When kidneys cannot filter blood properly
Why is this the correct answer?
The governing concept is excretion: healthy kidneys filter the blood and remove nitrogenous wastes, excess salts, and water to form urine. If the kidneys fail to perform this function adequately, harmful wastes accumulate in the body. During dialysis, a machine passes the patient’s blood through a selectively permeable membrane, removes wastes and excess fluid, and returns the cleaned blood. Therefore, option A is correct; the other options describe digestion, breathing, or plant nutrition, not kidney failure.
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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