MediumZoologyExcretory Products & Their Elimination
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Which of the following nitrogenous wastes requires the least amount of water for excretion?
A
Ammonia
B
Urea
C
Uric acid
D
Creatinine
Explanation
Uric acid is least toxic and insoluble in water, hence requires minimal water for excretion. It is excreted by birds and reptiles (uricotelic animals).
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