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    				| 1. | Nitrogenous excretory product of tadpole of frog isA. UreaB. GuanineC. Uric acidD. Ammonia | 
| Answer» Correct Answer - D In the tadpole, the end product of nitrogen metabolism is ammonia which is easily disposed off by diffusion in water. After metamorphosis, the frog excrete most of their nitrogen in the form of urea. | |