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
|
