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Uric acid is nitrogenous waste in

1. Mammals and molluscs
2. Birds and lizards
3. Frog and cartilaginous fishes
4. Insects and bony fishes

Correct answer: Birds and lizards

Solution

Uric acid is the main nitrogenous waste in uricotelic animals, which excrete it as a nearly insoluble paste to save water. Birds and reptiles such as lizards are classic uricotelic groups.

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