Excretory Products And Their Elimination Ques 6
6. Nitrogenous waste products are eliminated mainly as
[1991]
(a) urea in tadpole and ammonia in adult frog
(b) ammonia in tadpole and urea in adult frog
(c) urea in both tadpole and adult frog
(d) urea in tadpole and uric acid in adult frog
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Answer : b
Hints & Solutions
(b) Ammonia molecules are small and highly soluble in water. In ammonotelic animals large amount of $H_2 O$ is required to eliminate ammonia from the body, so it is found in aquatic animals like tadpole of frog. When tadpole becomes a mature frog it acquires mainly ureotelism.
BETA
