Q.

Nitrogenous waste is excreted in the form of pellet or paste by:          [2022]

1 Ornithorhynchus  
2 Salamandra  
3 Hippocampus  
4 Pavo  

Ans.

(4)

Pavo belongs to Class Aves, so excrete nitrogenous wastes as uric acid in the form of pellet or paste.