having gills not covered by operculum
presence of lateral line system
presence of large scales
presence of terminal mouth
A. having gills not covered by operculum
Shark
Cod
Amia
Both (a) and (b)
Coelocanth
Diodon
Sturgeon
Labeo
sharks
rays
whales
lung fishes
having gills not covered by operculum
presence of lateral line system
presence of large scales
presence of terminal mouth
dorsal
ventral
caudal
pelvic
respiration
excretion
movement
none of these
Placoid scales
Heterocercal tail fin
Ventrally placed mouth
Operculum
lungs
air bladders
cartilaginous skeleton
fins
cartilaginous fishes
bony fishes
lung fishes
paleontological fishes
pelvic fins
cloacal fins
anal fins
caudal fins
Endoderm
Mesoderm
Ectoderm
Integument
Sharks
Stingray
Dogfish
Catfish
teleosts
sharks
lung fishes
rays
Primates
Aves
Crocodiles
Pisces
Placoid scales
Ventral mouth
Operculum
Five pairs of gill slits
respiration
sound production
excretion
movement
hippocampus
labeo
anabes
none of these
sawfish
seahorse
electric ray
sucker fish
Pterois
Fistularia
Gambusia
None of these
10 volts
100 volts
50 volts
150 volts
a rounded body with ventral gill clefts
a flattened body with dorsal gill clefts
a flattened body with ventral gill clefts
any of these
Oxygen
Carbon dioxide
Fish food
Decoration
Saurology
Traumatology
Torpedology
Ichthyology
placoid
cycloid
ctenoid
rhombiod
sharks
whales
lung fishes
rays
live at the bottom of rivers
live in shallow streams
are active swimmers
live in sea water
ampullae of lorenzini
lateral line system
stato-acoustic organs
neuromast organs
vitamin A
iron
calcium
vitamin B complex
electric fish
saw fish
stone fish
dog fish
mollusc
mammal
star fish
bony fish