NEET 2026 Biology question
Which of the following statements about the reabsorption process in Henle's loop are **correct**? (a) The descending limb of Henle's loop is permeable to water but almost impermeable to electrolytes. (b) Urine gets concentrated in Henle's loop. (c) Reabsorption of Na⁺ and water takes place in Henle's loop. (d) Active or passive transport of electrolytes occurs in the ascending limb of Henle's loop. Choose the **correct** answer from the options given below:
Solution
(a) is correct (NCERT): the descending limb is permeable to water and almost impermeable to electrolytes, so the filtrate gets concentrated as it moves down. (d) is correct (NCERT): the ascending limb is impermeable to water but allows active or passive transport of electrolytes, so the filtrate is diluted as it moves
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