Mammals are distinguished from other vertebrates by the presence of:
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Correct answer: Mammary glands
Mammary glands that produce milk for nourishment of young are unique to mammals. This feature is the key diagnostic character that defines the class Mammalia.
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More Modern Animal Classification questions
- Which evidence is most useful for determining evolutionary relationships?
- Which vertebrate group is considered ectothermic?
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- Which vertebrate group was the first to invade land successfully?
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