Crocodiles have
acrodont and homodont dentition
homodont and thecodont dentition
heterodont and thecodont dentition
heterodont and acrodont dentition
Correct Answer :
B. homodont and thecodont dentition
Related Questions
Which is not true of reptiles ?
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
In poisonous snakes, the poison injecting teeth or fangs develop on
mandibles
maxilla
squamosal
quadrate
The belly scales on the body of a snake are broad and the third supralabial scale touches the eye and the nasal shield, it is a
viper
krait
sea snake
cobra
A snake has small scales on its belly, the tail being compressed laterally, it is a
krait
viper
sea snake
rat snake
All reptiles are
Poikilothermic and Amniotic
Homiothermic and Amniotic
Poikilothermic and Anamniotic
Homiothermic and Anamniotic
Special articular surfaces on the vertebrae of snakes are
pre- and post-zygapophysis
zygantera and zygosphenes
neural arches and haemal arches
none of these
Glass snake is a
true snake
lizard
protochordate
pseudosnake
Greatly elongated snout is seen in
garial
alligator
crocodile
both (b) and (c)
Fresh water chelones are called
terrapins
turtles
tortoises
none of these
The main difference between a lizard and a snake is that
a lizard has limbs while a snake is limbless
a lizard has movable eyelids while in snake the eyelids are immovble
a snake has functionable ear while in lizards the ears are non-functionable
a snake is poisonous while lizards are non-poisonous
The only poisonous lizard of the world is
Varanus-monitor lizard
Heloderma-g\l& monster
Ophiosaurus-glass snake
Chameleon-coloured lizard
If a snake has small belly scales and a cylindrical tail, it is a
poisonous snake
non-poisonous snake
(a) or (b)
(a) and (b)
The snakes belong to the group
Chelonia
Ophidia
Lacertilia
Rhyncocephalia
Copulatory organs are absent in
Lizards
Sphenodon
Snakes
Crabs
A snake has
movable eyelids
immovable eyelids
noeyeslids
only nictitating membrane
A urinary bladder is absent in
Chameleon
House lizard
Snake
Crocodile
A parietal eye is found in
coral snake
sea snake
sphenodon
garden lizard
The long and powerful tail of crocodiles is
dorsoventraly flattened
compressed from side to side
cylindrical and tapering
all of these
The largest lizard is
Heloderma
Chameleon
Ophiosaurus
Varanus
A well developed secondary palate is found in
garden lizard
crocodiles
cobras
vipers
The group of reptiles similar to sphenodon is
turtles and tortoises
alligators
snakes
lizards
The locomotion of snake is helped by
ribs and reduced limbs
ribs only
reduced limbs
reduced ribs
Pleurodont dentition is characteristic of
fishes and amphibians
all the reptiles
lizards and snakes
egg laying mammals
Proteolysin is present in the venom of
cobra
krait
viper
sea snake
Which is not a true snake ?
Glass snake
Coral snake
Rat snake
Blind snake
A third eye is present in the forehead of
Vipers
Cobra
Lizard
Sphenodon
Which of the following reptiles have the shortest tail ?
Garden lizard
Cobra
Chameleon
Python
If the dorsal median row of scales on the back are large and the fourth infralabial is largest, it is a
cobra
python
viper
krait
Typhlop is
glass snake
blind snake
tree snake
sea snake
The number of cranial nerves in a reptile is
8 pairs
10 pairs
12 pairs
20 paris