tympanic membrane and tympanic cavity
middle ear ossicle
eustachian tube
all of these
D. all of these
feed
breathe
drink water
none of these
neoteny
paedogensis
paedomorphosis
none of these
Anura
Apoda
Gymnophiona
Urodela
have two auricles and one ventricle
have smooth moist skin
have a cloaca
respire by lungs in adult stage
Alytes - midwife toad
Hyla - tree frog
Necturus - mud puppy
Bufo - common toad
lizards
rabbits
salmanders
crocodiles
Cryptobranchus - hell bender
Necturus - mud puppy
Amphiuma - congo cell
Rhacophorous - flying frog
Ichthyophis
Sharks
Rays
Cuttlefish
single occipital condyle and 10 pairs of cranial nerves
single occipital condyle and 12 pairs of cranial nerves
two occipital condyles and 10 pairs of cranial nerves
two occipital condyles and 12 pairs of cranial nerves
Oesophagus
Rectum
Duodenum
Intestine
Hyla
Bufo
Necturus
Ophisaurus
more terrestrial
more aquatic
more aerial
none of these
pronephric kidney
mesonephric kidney
metanephric kidney
both (a) and (b) ,
axial skeleton
appendicular skeleton
exoskeleton
visceral skeleton
a single body segment each
a multiple number of body segments each
a single and from multiple segments respectively
none of these
ward off their enemies
attract the opposite sex
identify the same species
collect the young ones
Amphiuma
Ichthyophis
Salamander
Necturus
Cryptobranchus - hell blender
Necturus - mud puppy
Uraeotyphlus - blind worm
Alytes - midwife toad
frogs
fishes
lizards
pigeons
it can get its food easily in water
its hindlimbs are webbed and help in swimming
it respires through skin
it can see through its transparent eye lids while swimming
Necturus
Pipa
Amblyostoma
Cryptobranchus
Hyla
Bufo
Rhacophorus
Rana
tympanic membrane and tympanic cavity
middle ear ossicle
eustachian tube
all of these
blood circulation in the body.
venous system
arterial system
all of these
Apoda
Caudata
Anura
Cyclostomata
Anura
Apoda
Urodela
Caudata
Hyla
Necturus
Rhacophorus
Ophisaurus
dry
scaly
moist
both (a) and (c)
Gill slits in adults
Long vertebral column
Tail in adults
Teeth in both the jaws
thick and cornified epithelium
poorly cornified stratified squamous epithelium
a simple columnar epithelium
small microscopic scales in it