Consider the given two statements:
| Statement I: | Urea is used as an osmolyte in the human body. |
| Statement II: | Urea is produced in the human liver. |
1. Only Statement I is correct.
2. Only Statement II is correct.
3. Both Statement I and Statement II are correct.
4. Both Statement I and Statement II are incorrect.
| I: | makes the collecting duct completely impermeable to water. |
| II: | causes vasoconstriction. |
| Column-I | Column-II | ||
| A. | Malpighian tubules | P. | Earthworm |
| B. | Green glands | Q. | Insects |
| C. | Flame cells | R. | Planaria |
| S. | Crustaceans |
| A | B | C | |
| 1. | Q | S | R |
| 2. | P | Q | R |
| 3. | Q | R | S |
| 4. | S | Q | P |
| 1. | NaCl and HCO3– | 2. | Urea and Uric acid |
| 3. | NaCl and Urea | 4. | H+ ions and TMAO |
| 1. | proximal convoluted tubule and the afferent arteriole at the point of their contact. |
| 2. | distal convoluted tubule and the afferent arteriole at the point of their contact. |
| 3. | proximal convoluted tubule and the efferent arteriole at the point of their contact. |
| 4. | distal convoluted tubule and the efferent arteriole at the point of their contact. |