Excretory Products and their EliminationHard

Question

Uric acid is nitrogenous waste in

Options

A.mammals and molluscs
B.birds and lizards
C.frog and cartilaginous fishes
D.insects and bony fishes

Solution

Uric acid is least soluble nitrogenous waste and 1 g of it needs only 10mL of water to be expelled out of body. Another advantage of it is that it is least toxic among all nitrogenous waste and can be retained in the body for longer period, so it is of greater advantage to animals which have limited access to water like birdfs and lizards.

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