axial skeleton
appendicular skeleton
exoskeleton
visceral skeleton
B. appendicular skeleton
Alytes - midwife toad
Hyla - tree frog
Necturus - mud puppy
Bufo - common toad
Hyla
Necturus
Rhacophorus
Ophisaurus
Frogs
Salamander
Ichthyophis
Necturus
Anura
Apoda
Gymnophiona
Urodela
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
larger in size
stronger
larger sound box
vocal sac
Frog
Necturus
Toad
Hyla
frogs
fishes
lizards
pigeons
nucleated and round
enucleated and oval
enucleated and round
nucleated and oval
Salmander
Cryptobranchus
Necturus
Bufo
Cryptobranchus - hell blender
Necturus - mud puppy
Uraeotyphlus - blind worm
Alytes - midwife toad
lizards
rabbits
salmanders
crocodiles
Apoda
Caudata
Anura
Cyclostomata
dry
scaly
moist
both (a) and (c)
Ram tigrina
Hyla
Rhacophorus
Amphiuma
Gill slits in adults
Long vertebral column
Tail in adults
Teeth in both the jaws
Elasmobranch ancestors
Amphioxis like ancestors
Crosspterygian ancestors
None of these
have two auricles and one ventricle
have smooth moist skin
have a cloaca
respire by lungs in adult stage
toads
frogs
salamanders
lizards
Oesophagus
Rectum
Duodenum
Intestine
neoteny
paedogensis
paedomorphosis
none of these
tympanic membrane and tympanic cavity
middle ear ossicle
eustachian tube
all of these
feed
breathe
drink water
none of these
Sparrow
Hyla
Mouse
Bufo
Oviparous
Eggs non-mosaic
fertilisation external
Cleavage-meroblastic
They have middle ear apparatus
They show parental cafe
They lose tail and gills during metamorphosis
All of these
Salamandar
Discoglossus
Necturus
Amphiuma
Hyla
Uraeotyphlus
Ophisaurus
Discoglossus
axial skeleton
appendicular skeleton
exoskeleton
visceral skeleton
Ichthyopsida
Ichthyopsaurus
Ichthyodactyla
Pterodactyla