Lizards | Snakes |
1. Slightly compresed body | Cylindrical body |
2. Two pairs of limbs | Limbs are absent |
3. Exoskeleton is not removed by moulting | Exoskeleton is removed periodically by moulting |
4. Scales are uniform in size | Scales are differentiated into plates and shields |
5. Nictitating membrane is present | Absent |
6. Tympanic membrane is present | Absent |
7. Tongue is not bifid | Tongue is bifid |
8. They can hear air-borne sound | They cannot hear air-borne sound |
9. Urinary bladder is present | Absent |
10. Jaw bones are fixed | Jaw bones are movable |
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