First slide

Classification of Animals

Question

Which among these is the correct combination of Amniotes?

Moderate

A

Chelone, Aptenodytes, Pteropus
B

Testudo, Columba, Betta
C

Chameleon, Ichthyophis, Macropus
D

Clarias, Psittacula, Pteropus

Solution

Fishes (e.g., Clarias and Betta) and amphibians (e.g., Ichthyophis) are anamniotes. They lack amnion.
Reptiles (e.g., Chelone, Testudo, Chameleon), Aves (e.g., Corvus, Columba, Psittacula) and mammals (e.g., Ornithorhynchus Macropus and Pteropus) are amniotes. An extraembryonic membrane called amnion develops around their embryo. It protests the embryo for desiccation and helps in shock absorption.

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