Gill slits in adults
Long vertebral column
Tail in adults
Teeth in both the jaws
D. Teeth in both the jaws
tympanic membrane and tympanic cavity
middle ear ossicle
eustachian tube
all of these
Amphiuma
Ichthyophis
Salamander
Necturus
Apoda
Caudata
Anura
Cyclostomata
Hyla
Uraeotyphlus
Ophisaurus
Discoglossus
Uraeotyphlus
Triturus
Siren
Amphiuma
Cryptobranchus - hell blender
Necturus - mud puppy
Uraeotyphlus - blind worm
Alytes - midwife toad
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
Hyla
Necturus
Rhacophorus
Ophisaurus
blood circulation in the body.
venous system
arterial system
all of these
axial skeleton
appendicular skeleton
exoskeleton
visceral skeleton
They have middle ear apparatus
They show parental cafe
They lose tail and gills during metamorphosis
All of these
Salamandar
Discoglossus
Necturus
Amphiuma
Anura
Apoda
Urodela
Caudata
Salmander
Cryptobranchus
Necturus
Bufo
Cryptobranchus - hell bender
Necturus - mud puppy
Amphiuma - congo cell
Rhacophorous - flying frog
Frog
Necturus
Toad
Hyla
neoteny
paedogensis
paedomorphosis
none of these
a single body segment each
a multiple number of body segments each
a single and from multiple segments respectively
none of these
Elasmobranch ancestors
Amphioxis like ancestors
Crosspterygian ancestors
None of these
Oesophagus
Rectum
Duodenum
Intestine
development of sturdy eggs
change over to herbivorous feeding
occurence of metamoophosis on amphibia
evolution of terrestrial habit
Ichthyopsida
Ichthyopsaurus
Ichthyodactyla
Pterodactyla
toads
frogs
salamanders
lizards
dry
scaly
moist
both (a) and (c)
Anura
Apoda
Gymnophiona
Urodela
Ram tigrina
Hyla
Rhacophorus
Amphiuma
thick and cornified epithelium
poorly cornified stratified squamous epithelium
a simple columnar epithelium
small microscopic scales in it
Necturus
Pipa
Amblyostoma
Cryptobranchus
Sparrow
Hyla
Mouse
Bufo
skull of frog
vertebrae of frog
sternum of frog
pelvis of frog