Salmon is an example of
anandromous migration
catadromous migration
cartilaginous fish
none of these
Correct Answer :
A. anandromous migration
Related Questions
Which of the following is not true about bony fishes ?
Five pairs of gills covered with operculum
Homocercal tail
Eight pairs of gills
Any of these
Most venomous fish is
electric fish
saw fish
stone fish
dog fish
An anamniote group is
Primates
Aves
Crocodiles
Pisces
Homocercal tail fin with symmetrical upper and lower lobes is present in
Scoliodon
Electric ray
Whale
Lung fish
Parental care by males is found in
hippocampus
labeo
anabes
none of these
The fish used to control spread of malaria is
Pterois
Fistularia
Gambusia
None of these
Study of sharks and rays is known as
Saurology
Traumatology
Torpedology
Ichthyology
In Scoliodon, the thermoreceptors are
ampullae of lorenzini
lateral line system
stato-acoustic organs
neuromast organs
Which fish is famous for cod liver oil ?
Shark
Cod
Amia
Both (a) and (b)
The function of swim bladder in fishes is mainly
sound production
respiratory
locomotion
hydrostatic
Placoid scales are found in
cartilaginous fishes
bony fishes
lung fishes
paleontological fishes
In a fish aquarium green aquatic plants are grown for
Oxygen
Carbon dioxide
Fish food
Decoration
Chondricthyes is not characterised by the presence of
Placoid scales
Ventral mouth
Operculum
Five pairs of gill slits
Cod liver oil is a rich source of
vitamin A
iron
calcium
vitamin B complex
A muscular fin, aiding in propulsion is
dorsal
ventral
caudal
pelvic
The saw fish Pristis is a member of the class
Osteichthyes
Chondrichthyes
Dipnoi
Holocephali
A fish is characterised by the presence of
pharyngeal gills
paired fins
dermal scales
all of these
Parental care is a characteristic of
cat fish
dog fish
flying fish
seahorse
Which one of the cartilaginous fishes posses an operculum over the gill ?
Trygon
Torpedo
Chimaera
Sphynta
Which of the following fishes lack claspers, used for internal fertilization in cartilaginous fishes ?
Sharks
Stingray
Dogfish
Catfish
The flying fish Exocoetus belongs to the class
Dipnoi
Osteichthyes
Cyclostomata
Chondrichthyes
Pectoral fins are not clearly marked off from the body in
sharks
rays
whales
lung fishes
The pair of fins seen on either side of cloaca of fishes are the
pelvic fins
cloacal fins
anal fins
caudal fins
Torpedo is a name for
sawfish
seahorse
electric ray
sucker fish
A homocercal tail is found in
teleosts
sharks
lung fishes
rays
Chondrichthyes differs from Osteichthves in
having gills not covered by operculum
presence of lateral line system
presence of large scales
presence of terminal mouth
A group of cartilaginous fishes specialised for bottom dwelling is
sharks
whales
lung fishes
rays
Sea horse is a
mollusc
mammal
star fish
bony fish
The tympanum is absent in
dog fish
bony fishes
both (a) and (b)
all fishes
Torpedo, the electric ray, could give a shock of about
10 volts
100 volts
50 volts
150 volts