movable eyelids
immovable eyelids
noeyeslids
only nictitating membrane
B. immovable eyelids
nervous system
respiratory system
digestive system
excretory system
poisonous snake
non-poisonous snake
(a) or (b)
(a) and (b)
Diapsida
Sauropsida
Ichthyopsida
Synapsida
Poikilothermic and Amniotic
Homiothermic and Amniotic
Poikilothermic and Anamniotic
Homiothermic and Anamniotic
fishes and amphibians
all the reptiles
lizards and snakes
egg laying mammals
Garden lizard
Cobra
Chameleon
Python
Chameleon
House lizard
Snake
Crocodile
mandibles
maxilla
squamosal
quadrate
Wall lizard
Vipers
Flying lizard
Garden lizard
garden lizard
crocodiles
cobras
vipers
viper
krait
sea snake
cobra
Hetttidaclylus
Chameleon
Draco
Sphenodon
Lizards have two pairs of pentadactyl limbs
Crocodile has webbed feet
Crocodiles are included under the sub-class Diapsida
The only poisonous lizard is varanus
Glass snake
Coral snake
Rat snake
Blind snake
Lizards
Sphenodon
Snakes
Crabs
snake
chelone
sea snake
lizard
8 pairs
10 pairs
12 pairs
20 paris
The eardrum and middle ear are absent in snakes
Turtles are terrestrial whereas tortoises are aquatic
The rami of lower chin is fused in lizards
Crocodiles have a compressed tail
respiratory system
circulatory system
digestive system
nervous system
turtles and tortoises
alligators
snakes
lizards
krait
viper
sea snake
rat snake
Their body is covered with dry, horny, mesodermal scales
Their skin is devoid of glands
They are poikilothermous
Their skeletons are more bony than in amphibians
ribs and reduced limbs
ribs only
reduced limbs
reduced ribs
Varanus-monitor lizard
Heloderma-g\l& monster
Ophiosaurus-glass snake
Chameleon-coloured lizard
cobra
krait
viper
sea snake
king cobra
crocodile
sphenodon
lizard
Snakes
Crocodiles
Turtles
Chameleons
Chelonia
Ophidia
Lacertilia
Rhyncocephalia
air
snout
skin
tongue
true snake
lizard
protochordate
pseudosnake