Q.

The chief nitrogenous excretory waste is the same in

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a

lamprey, lion and locust

b

cockroach, cobra and crow

c

honeybee, horse and hydra

d

prawn, parrot and platypus

answer is B.

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Detailed Solution

The chief nitrogenous waste is uric acid in insects (e.g., cockroach, locust, honeybee), reptiles (e.g., cobra) and birds (e.g., crow, parrot)
The chief nitrogenous waste is ammonia in aquatic animals (e.g., hydra, prawn, lamprey)
The chief nitrogenous waste is urea in earthworms, cartilaginous fishes, terrestrial amphibians and mammals (e.g., lion, horse, platypus)

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