anterior fins
ray fins
pectoral fins
paired fins
C. pectoral fins
hippocampus
labeo
anabes
none of these
respiration
sound production
excretion
movement
Primates
Aves
Crocodiles
Pisces
pelvic fins
cloacal fins
anal fins
caudal fins
a shell
egg case of skate fishes
a colony of skate fishes
none of these
cartilaginous fishes
bony fishes
lung fishes
paleontological fishes
a rounded body with ventral gill clefts
a flattened body with dorsal gill clefts
a flattened body with ventral gill clefts
any of these
live at the bottom of rivers
live in shallow streams
are active swimmers
live in sea water
having gills not covered by operculum
presence of lateral line system
presence of large scales
presence of terminal mouth
vitamin A
iron
calcium
vitamin B complex
10 volts
100 volts
50 volts
150 volts
Whale
Tadpole
Aquatic urodeles
Common Indian dog fish
Five pairs of gills covered with operculum
Homocercal tail
Eight pairs of gills
Any of these
nostrils
mouth
gill slits
swimming bladder
all types fishes
only cartilaginous fishes
only bony fishes
sea dwelling fishes
the nature of their scales
the position of the mouth
the position of gill slits
the kind of the tail fin
cat fish
dog fish
flying fish
seahorse
electric fish
saw fish
stone fish
dog fish
ampullae of lorenzini
lateral line system
stato-acoustic organs
neuromast organs
Scoliodon
Electric ray
Whale
Lung fish
Dasyatis
Chimaera
Sphyma
Torpedo
sharks
whales
lung fishes
rays
Osteichthyes
Chondrichthyes
Dipnoi
Holocephali
Endoderm
Mesoderm
Ectoderm
Integument
Sharks
Stingray
Dogfish
Catfish
respiration
excretion
movement
none of these
Dipnoi
Osteichthyes
Cyclostomata
Chondrichthyes
teleosts
sharks
lung fishes
rays
dog fish
bony fishes
both (a) and (b)
all fishes
Shark
Cod
Amia
Both (a) and (b)