Question
What are differences between the following:
Aves and mammals.
Aves and mammals.
✓
Answer
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Aves
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Mammals
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i.
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Forelimbs are modified into wings.
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Wings are absent except in bats.
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ii.
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The body is covered with feathers and scales.
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Feathers and scales are absent. Hair is present.
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iii.
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Mammary glands are absent.
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Females have mammary glands.
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iv.
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A toothless beak is present.
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Teeth are present. Jaws do not form beak.
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