frogs
fishes
lizards
pigeons
B. fishes
nucleated and round
enucleated and oval
enucleated and round
nucleated and oval
Alytes - midwife toad
Hyla - tree frog
Necturus - mud puppy
Bufo - common toad
Salamandar
Discoglossus
Necturus
Amphiuma
Frogs
Salamander
Ichthyophis
Necturus
lizards
rabbits
salmanders
crocodiles
pronephric kidney
mesonephric kidney
metanephric kidney
both (a) and (b) ,
They have middle ear apparatus
They show parental cafe
They lose tail and gills during metamorphosis
All of these
Ichthyopsida
Ichthyopsaurus
Ichthyodactyla
Pterodactyla
Necturus
Pipa
Amblyostoma
Cryptobranchus
Apoda
Caudata
Anura
Cyclostomata
toads
frogs
salamanders
lizards
more terrestrial
more aquatic
more aerial
none of these
Hyla
Bufo
Rhacophorus
Rana
Oesophagus
Rectum
Duodenum
Intestine
a single body segment each
a multiple number of body segments each
a single and from multiple segments respectively
none of these
Hyla
Necturus
Rhacophorus
Ophisaurus
have two auricles and one ventricle
have smooth moist skin
have a cloaca
respire by lungs in adult stage
thick and cornified epithelium
poorly cornified stratified squamous epithelium
a simple columnar epithelium
small microscopic scales in it
Cryptobranchus - hell blender
Necturus - mud puppy
Uraeotyphlus - blind worm
Alytes - midwife toad
Anura
Apoda
Gymnophiona
Urodela
skull of frog
vertebrae of frog
sternum of frog
pelvis of frog
Salmander
Cryptobranchus
Necturus
Bufo
Oviparous
Eggs non-mosaic
fertilisation external
Cleavage-meroblastic
axial skeleton
appendicular skeleton
exoskeleton
visceral skeleton
tympanic membrane and tympanic cavity
middle ear ossicle
eustachian tube
all of these
Elasmobranch ancestors
Amphioxis like ancestors
Crosspterygian ancestors
None of these
development of sturdy eggs
change over to herbivorous feeding
occurence of metamoophosis on amphibia
evolution of terrestrial habit
Ichthyophis
Sharks
Rays
Cuttlefish
Hyla
Uraeotyphlus
Ophisaurus
Discoglossus
Anura
Apoda
Urodela
Caudata