First slide
Classification of Animals
Question

Which of the following represents the correct combination of a group with its character, without any exception?

Moderate
Solution

All birds are oviparous. Among mammals, prototherians (e.g., Ornithorhynchus - platypus) is oviparous. Chondrichthyes are viviparous. Osteichthyes are mostly oviparous.

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