Multiple choice Which of the following pairs of organisms is uricotelic? Birds and insects Reptiles and mammals Bony fishes and lizards Cartilaginous fishes and mammals - Reveal answer Fill a bubble to check yourself A Correct answer Explanation The organisms that excrete nitrogenous wastes as uric acid in the form of pellet or paste with a minimum loss of water are called uricotelic animals, e.g. birds and most of the insects.