Ichthyopsida
Ichthyopsaurus
Ichthyodactyla
Pterodactyla
A. Ichthyopsida
Cryptobranchus - hell blender
Necturus - mud puppy
Uraeotyphlus - blind worm
Alytes - midwife toad
development of sturdy eggs
change over to herbivorous feeding
occurence of metamoophosis on amphibia
evolution of terrestrial habit
Oviparous
Eggs non-mosaic
fertilisation external
Cleavage-meroblastic
nucleated and round
enucleated and oval
enucleated and round
nucleated and oval
ward off their enemies
attract the opposite sex
identify the same species
collect the young ones
Ichthyopsida
Ichthyopsaurus
Ichthyodactyla
Pterodactyla
a single body segment each
a multiple number of body segments each
a single and from multiple segments respectively
none of these
Gill slits in adults
Long vertebral column
Tail in adults
Teeth in both the jaws
Oesophagus
Rectum
Duodenum
Intestine
neoteny
paedogensis
paedomorphosis
none of these
Apoda
Caudata
Anura
Cyclostomata
They have middle ear apparatus
They show parental cafe
They lose tail and gills during metamorphosis
All of these
have two auricles and one ventricle
have smooth moist skin
have a cloaca
respire by lungs in adult stage
Hyla
Bufo
Necturus
Ophisaurus
skull of frog
vertebrae of frog
sternum of frog
pelvis of frog
pronephric kidney
mesonephric kidney
metanephric kidney
both (a) and (b) ,
Anura
Apoda
Urodela
Caudata
more terrestrial
more aquatic
more aerial
none of these
Anura
Apoda
Gymnophiona
Urodela
feed
breathe
drink water
none of these
Hyla
Uraeotyphlus
Ophisaurus
Discoglossus
blood circulation in the body.
venous system
arterial system
all of these
Sparrow
Hyla
Mouse
Bufo
Hyla
Necturus
Rhacophorus
Ophisaurus
dry
scaly
moist
both (a) and (c)
Ichthyophis
Sharks
Rays
Cuttlefish
Necturus
Pipa
Amblyostoma
Cryptobranchus
toads
frogs
salamanders
lizards
axial skeleton
appendicular skeleton
exoskeleton
visceral skeleton
tympanic membrane and tympanic cavity
middle ear ossicle
eustachian tube
all of these