Birds are evolved from
Non-chordates
Reptiles
Amphibians
Fishes
(b)Reptiles have given rise to aves and mammals.
$A$ : Mesozoic is the era of dinosaurs but they suddenly disappeared from the earth. $R$ : Dinosaurs may have changed into birds or climatic changes killed them
Which of the following is correctly matched w.r.t. era and its period?
The first mammals arose
Ancestral amphibians were tetrapods that evolved during
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