Question
Reptilia and Mammalia
| Reptilia | Mammalia | ||
| (i) | Skin is dry and covered with scales. | (i) | Skin is covered with hair, or fur. |
| (ii) | They are cold-blooded animals. | (ii) | They are warm blooded animals. |
| (iii) | Heart is incompletely four chambered. | (iii) | Heart is completely four chambered. |
| (iv) | Pinna or external ear is absent. | (iv) | Pinna or external ear is present. |
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