| Assertion (A): | Ascending limb of the loop of Henle is impermeable to water and allows transport of electrolytes actively or passively. |
| Reason (R): | Dilution of filtrate takes place due to efflux of electrolytes in the medullary fluid |
| 1. | (A) is True, (R) is False |
| 2. | (A) is False, (R) is True |
| 3. | Both (A) and (R) are True and (R) is the correct explanation of (A) |
| 4. | Both (A) and (R) are True but (R) is not the correct explanation of (A) |
| 1. | PCT | 2. | Henle's loop |
| 3. | DCT | 4. | Collecting duct |
| 1. | more concentrated than filtrate exiting the loop Henle. |
| 2. | less concentrated than filtrate exiting the loop of Henle. |
| 3. | more voluminous than filtrate exiting the loop of Henle. |
| 4. | less voluminous than filtrate exiting the loop of Henle. |