pronephric kidney
mesonephric kidney
metanephric kidney
both (a) and (b) ,
Apoda
Caudata
Anura
Cyclostomata
neoteny
paedogensis
paedomorphosis
none of these
dry
scaly
moist
both (a) and (c)
ward off their enemies
attract the opposite sex
identify the same species
collect the young ones
Hyla
Necturus
Rhacophorus
Ophisaurus
Anura
Apoda
Urodela
Caudata
axial skeleton
appendicular skeleton
exoskeleton
visceral skeleton
Oviparous
Eggs non-mosaic
fertilisation external
Cleavage-meroblastic
Hyla
Uraeotyphlus
Ophisaurus
Discoglossus
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
frogs
fishes
lizards
pigeons
toads
frogs
salamanders
lizards
lizards
rabbits
salmanders
crocodiles
Hyla
Bufo
Necturus
Ophisaurus
nucleated and round
enucleated and oval
enucleated and round
nucleated and oval
tympanic membrane and tympanic cavity
middle ear ossicle
eustachian tube
all of these
Alytes - midwife toad
Hyla - tree frog
Necturus - mud puppy
Bufo - common toad
Sparrow
Hyla
Mouse
Bufo
Cryptobranchus - hell bender
Necturus - mud puppy
Amphiuma - congo cell
Rhacophorous - flying frog
Cryptobranchus - hell blender
Necturus - mud puppy
Uraeotyphlus - blind worm
Alytes - midwife toad
skull of frog
vertebrae of frog
sternum of frog
pelvis of frog
Gill slits in adults
Long vertebral column
Tail in adults
Teeth in both the jaws
have two auricles and one ventricle
have smooth moist skin
have a cloaca
respire by lungs in adult stage
Amphiuma
Ichthyophis
Salamander
Necturus
thick and cornified epithelium
poorly cornified stratified squamous epithelium
a simple columnar epithelium
small microscopic scales in it
Ichthyophis
Sharks
Rays
Cuttlefish
feed
breathe
drink water
none of these
larger in size
stronger
larger sound box
vocal sac
blood circulation in the body.
venous system
arterial system
all of these