| Statement I: | The only vertebrates with jointed appendages are the insects. | 
| Statement II: | The only invertebrates capable of flight are the insects. | 
| Animal | Excretory organs | Excretory product | |
| 1. | Labeo (Rohu) | Nephridial tubes | Ammonia | 
| 2. | Salamander | Kidney | Urea | 
| 3. | Peacock | Kidney | Urea | 
| 4. | Housefly | Renal tubules | Uric acid |