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NEET UG BIOLOGY MCQ: EXCRETORY PRODUCTS AND THEIR ELIMINATION
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Medium
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Understanding
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Assertion: Medullary interstial fluids are highly concentrated
Reason: Water reabsorbed from descending limb of Henle’s loop enters into the vasa recta
Reason: Water reabsorbed from descending limb of Henle’s loop enters into the vasa recta
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Correct option: B
A and R are correct, but R is not correct explanation for A
Option B (A and R are correct, but R is not correct explanation for A) is correct because both the assertion and reason are true, but the reason doesn't directly explain why the medullary interstitial fluid is highly concentrated. The concentration gradient is primarily established by the countercurrent multiplier system involving the loop of Henle and vasa recta.
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