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Question
Which of the following groups evolved from reptiles?
Options
Amphibians and birds
Amphibians and mammals
Birds and mammals
Mammals and crossopterygians
MCQ
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Solution
Birds and mammals
Explanation:
Both birds and mammals are evolutionary groups that evolved from reptilian ancestors. Birds evolved from theropod dinosaurs (a group of reptiles), and mammals evolved from synapsid reptiles. Amphibians evolved earlier from different ancestors and are not directly from reptiles, while crossopterygians are lobe-finned fishes, not reptiles. Therefore, birds and mammals share a common lineage that traces back to reptiles.
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