development of sturdy eggs
change over to herbivorous feeding
occurence of metamoophosis on amphibia
evolution of terrestrial habit
D. evolution of terrestrial habit
Gill slits in adults
Long vertebral column
Tail in adults
Teeth in both the jaws
Ram tigrina
Hyla
Rhacophorus
Amphiuma
feed
breathe
drink water
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
Frogs
Salamander
Ichthyophis
Necturus
Apoda
Caudata
Anura
Cyclostomata
Anura
Apoda
Urodela
Caudata
nucleated and round
enucleated and oval
enucleated and round
nucleated and oval
Anura
Apoda
Gymnophiona
Urodela
Frog
Necturus
Toad
Hyla
Salmander
Cryptobranchus
Necturus
Bufo
more terrestrial
more aquatic
more aerial
none of these
pronephric kidney
mesonephric kidney
metanephric kidney
both (a) and (b) ,
Elasmobranch ancestors
Amphioxis like ancestors
Crosspterygian ancestors
None of these
frogs
fishes
lizards
pigeons
Oesophagus
Rectum
Duodenum
Intestine
thick and cornified epithelium
poorly cornified stratified squamous epithelium
a simple columnar epithelium
small microscopic scales in it
skull of frog
vertebrae of frog
sternum of frog
pelvis of frog
tympanic membrane and tympanic cavity
middle ear ossicle
eustachian tube
all of these
They have middle ear apparatus
They show parental cafe
They lose tail and gills during metamorphosis
All of these
development of sturdy eggs
change over to herbivorous feeding
occurence of metamoophosis on amphibia
evolution of terrestrial habit
single occipital condyle and 10 pairs of cranial nerves
single occipital condyle and 12 pairs of cranial nerves
two occipital condyles and 10 pairs of cranial nerves
two occipital condyles and 12 pairs of cranial nerves
Hyla
Uraeotyphlus
Ophisaurus
Discoglossus
Hyla
Bufo
Necturus
Ophisaurus
Salamandar
Discoglossus
Necturus
Amphiuma
Ichthyopsida
Ichthyopsaurus
Ichthyodactyla
Pterodactyla
Amphiuma
Ichthyophis
Salamander
Necturus
axial skeleton
appendicular skeleton
exoskeleton
visceral skeleton
larger in size
stronger
larger sound box
vocal sac
Oviparous
Eggs non-mosaic
fertilisation external
Cleavage-meroblastic