What are the differences between animals belonging to the Aves group and those in the mammalian group?

Answer :

Differences between Aves group and Mammalian group

Aves group	Mammalian group
Most birds have feathers and they possess a beak. They lays eggs, hence are oviparous.	They do not have feathers and beak is also not present. Some of them lay eggs and some give birth to young hence they are both viviparous and oviparous

This is an answered question from Chapter 7. Diversity in Living Organisms , CBSE Class 9th Science

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