First slide
Excretory Products and Organs
Question

Identify the set of animals which excrete the same substance as their chief nitrogenous waste.

Easy
Solution

Reptiles (e.g., lizard), birds (e.g., parrot), insects (e.g., silkworm, Locust ) and land snails excrete uric acid hence they are called uricotelic. 

Shark, frog, camel, electric ray are ureotelic. 

Hydra (coelenterate), Rohu, Catla (bony fishes) are ammonotelic 

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