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