| 1. | Ammonia | 2. | Urea |
| 3. | Uric acid | 4. | Allantoin |
| Assertion (A): | Frogs are ureotelic organisms. |
| Reason (R): | Frogs eliminate uric acid as metabolic excretory waste product. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |