First slide
Classification of Animals
Question

Identify the correct combination.

 GroupSalient feature
1AmphibiaSingle circulation
2ReptiliaMesodermal exoskeleton
3BirdsFully ossified endoskeleton
4MammaliaRight systemic arch

Easy
Solution

Amphibia - Incomplete double circulation

Reptilia - Ectodermal exoskeleton

Aves - Endoskeleton is fully ossified

Mammalia - Left systemic arch

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