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प्रश्न
Differentiate between
aves and mammals
अंतर स्पष्ट करें
उत्तर
| aves | Mammals | ||
| 1 | Their body is covered with feathers. | 1 | They have hair on their body. |
| 2 | Forelimbs are modified into wings to fly. | 2 | Forelimbs exist as hand, paw, or hooves. |
| 3 | They have a horny beak with no teeth. | 3 | They have a mouth with teeth. |
| 4 | They lay eggs. with no teeth. | 4 | They give birth to young ones. |
| 5 | They don’t have mammary glands. | 5 | They have mammary glands i.e. they suckle their babies. |
| 6 | They have hollow bones. | 6 | They have solid bones. |
| 7 | e.g. Crow, parrot. | 7 | e.g. Humans, dogs. |
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