Ichthyophis
Sharks
Rays
Cuttlefish
Anura
Apoda
Gymnophiona
Urodela
larger in size
stronger
larger sound box
vocal sac
frogs
fishes
lizards
pigeons
Gill slits in adults
Long vertebral column
Tail in adults
Teeth in both the jaws
Oesophagus
Rectum
Duodenum
Intestine
Frogs
Salamander
Ichthyophis
Necturus
Ichthyopsida
Ichthyopsaurus
Ichthyodactyla
Pterodactyla
nucleated and round
enucleated and oval
enucleated and round
nucleated and oval
feed
breathe
drink water
none of these
Salamandar
Discoglossus
Necturus
Amphiuma
more terrestrial
more aquatic
more aerial
none of these
Ram tigrina
Hyla
Rhacophorus
Amphiuma
skull of frog
vertebrae of frog
sternum of frog
pelvis of frog
have two auricles and one ventricle
have smooth moist skin
have a cloaca
respire by lungs in adult stage
development of sturdy eggs
change over to herbivorous feeding
occurence of metamoophosis on amphibia
evolution of terrestrial habit
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
Anura
Apoda
Urodela
Caudata
tympanic membrane and tympanic cavity
middle ear ossicle
eustachian tube
all of these
Sparrow
Hyla
Mouse
Bufo
dry
scaly
moist
both (a) and (c)
Cryptobranchus - hell blender
Necturus - mud puppy
Uraeotyphlus - blind worm
Alytes - midwife toad
lizards
rabbits
salmanders
crocodiles
Hyla
Bufo
Rhacophorus
Rana
toads
frogs
salamanders
lizards
thick and cornified epithelium
poorly cornified stratified squamous epithelium
a simple columnar epithelium
small microscopic scales in it
Elasmobranch ancestors
Amphioxis like ancestors
Crosspterygian ancestors
None of these
Apoda
Caudata
Anura
Cyclostomata
pronephric kidney
mesonephric kidney
metanephric kidney
both (a) and (b) ,
blood circulation in the body.
venous system
arterial system
all of these