A) uric acid
B) ammonia
C) urea
D) none of these
Correct Answer: C
Solution :
In cartilagenous fish (elasmobranch) adult amphibians, aquatic reptiles and mammals the nitrogenous waste excrete hi the form of urea. Therefore, they are called ureotelism. In birds, lizards, snake, land snails and insects, the nitrogeneous waste is excreted in the form of uric acid. Therefore, they are called uricotelism. In aquatic invertebrates like polycheate, annileds, aquatic crustacean, aquatic molluscs, bony fishes, aquatic amphibians etc., the nitrogeneous waste is excreted in the form of ammonia. Therefore, these are called as ammonotelism.
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