pharyngeal gills
paired fins
dermal scales
all of these
D. all of these
mollusc
mammal
star fish
bony fish
pelvic fins
cloacal fins
anal fins
caudal fins
electric fish
saw fish
stone fish
dog fish
hippocampus
labeo
anabes
none of these
teleosts
sharks
lung fishes
rays
ampullae of lorenzini
lateral line system
stato-acoustic organs
neuromast organs
Endoderm
Mesoderm
Ectoderm
Integument
vitamin A
iron
calcium
vitamin B complex
Osteichthyes
Chondrichthyes
Dipnoi
Holocephali
nostrils
mouth
gill slits
swimming bladder
Sharks
Stingray
Dogfish
Catfish
respiration
excretion
movement
none of these
sharks
whales
lung fishes
rays
lungs
air bladders
cartilaginous skeleton
fins
Scoliodon
Electric ray
Whale
Lung fish
Oxygen
Carbon dioxide
Fish food
Decoration
cartilaginous fishes
bony fishes
both (a) and (b)
all fishes except sharks
having gills not covered by operculum
presence of lateral line system
presence of large scales
presence of terminal mouth
sharks
rays
whales
lung fishes
respiration
sound production
excretion
movement
placoid
cycloid
ctenoid
rhombiod
pharyngeal gills
paired fins
dermal scales
all of these
Primates
Aves
Crocodiles
Pisces
sound production
respiratory
locomotion
hydrostatic
a shell
egg case of skate fishes
a colony of skate fishes
none of these
Placoid scales
Ventral mouth
Operculum
Five pairs of gill slits
Five pairs of gills covered with operculum
Homocercal tail
Eight pairs of gills
Any of these
Dipnoi
Osteichthyes
Cyclostomata
Chondrichthyes
Shark
Cod
Amia
Both (a) and (b)
Trygon
Torpedo
Chimaera
Sphynta