neoteny
paedogensis
paedomorphosis
none of these
A. neoteny
have two auricles and one ventricle
have smooth moist skin
have a cloaca
respire by lungs in adult stage
Elasmobranch ancestors
Amphioxis like ancestors
Crosspterygian ancestors
None of these
nucleated and round
enucleated and oval
enucleated and round
nucleated and oval
pronephric kidney
mesonephric kidney
metanephric kidney
both (a) and (b) ,
Hyla
Uraeotyphlus
Ophisaurus
Discoglossus
tympanic membrane and tympanic cavity
middle ear ossicle
eustachian tube
all of these
Uraeotyphlus
Triturus
Siren
Amphiuma
dry
scaly
moist
both (a) and (c)
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
axial skeleton
appendicular skeleton
exoskeleton
visceral skeleton
blood circulation in the body.
venous system
arterial system
all of these
Necturus
Pipa
Amblyostoma
Cryptobranchus
Ichthyophis
Sharks
Rays
Cuttlefish
Sparrow
Hyla
Mouse
Bufo
a single body segment each
a multiple number of body segments each
a single and from multiple segments respectively
none of these
Oesophagus
Rectum
Duodenum
Intestine
thick and cornified epithelium
poorly cornified stratified squamous epithelium
a simple columnar epithelium
small microscopic scales in it
more terrestrial
more aquatic
more aerial
none of these
Salamandar
Discoglossus
Necturus
Amphiuma
Frogs
Salamander
Ichthyophis
Necturus
Ichthyopsida
Ichthyopsaurus
Ichthyodactyla
Pterodactyla
larger in size
stronger
larger sound box
vocal sac
Anura
Apoda
Gymnophiona
Urodela
Cryptobranchus - hell bender
Necturus - mud puppy
Amphiuma - congo cell
Rhacophorous - flying frog
frogs
fishes
lizards
pigeons
neoteny
paedogensis
paedomorphosis
none of these
Amphiuma
Ichthyophis
Salamander
Necturus
Hyla
Bufo
Necturus
Ophisaurus
Cryptobranchus - hell blender
Necturus - mud puppy
Uraeotyphlus - blind worm
Alytes - midwife toad
skull of frog
vertebrae of frog
sternum of frog
pelvis of frog