A well developed swim bladder is seen in fishes which
live at the bottom of rivers
live in shallow streams
are active swimmers
live in sea water
Correct Answer :
C. are active swimmers
Related Questions
Most venomous fish is
electric fish
saw fish
stone fish
dog fish
Which of the following is not characteristic of chondricthyes ?
Placoid scales
Heterocercal tail fin
Ventrally placed mouth
Operculum
Chondricthyes is not characterised by the presence of
Placoid scales
Ventral mouth
Operculum
Five pairs of gill slits
Which one of the cartilaginous fishes posses an operculum over the gill ?
Trygon
Torpedo
Chimaera
Sphynta
The pair of fins found near the operculum in bony fishes is known as
anterior fins
ray fins
pectoral fins
paired fins
Which of the following does not have lateral line organs ?
Whale
Tadpole
Aquatic urodeles
Common Indian dog fish
The oldest living fish is
Coelocanth
Diodon
Sturgeon
Labeo
Rays have
a rounded body with ventral gill clefts
a flattened body with dorsal gill clefts
a flattened body with ventral gill clefts
any of these
A group of cartilaginous fishes specialised for bottom dwelling is
sharks
whales
lung fishes
rays
A homocercal tail is found in
teleosts
sharks
lung fishes
rays
In fishes, the lateral line receptors are
olfactoreceptors
rheoreceptors
gustoreceptors
chemoreceptors
A muscular fin, aiding in propulsion is
dorsal
ventral
caudal
pelvic
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
In sharks, the scales are
placoid
cycloid
ctenoid
rhombiod
Parental care is a characteristic of
cat fish
dog fish
flying fish
seahorse
A well developed swim bladder is seen in fishes which
live at the bottom of rivers
live in shallow streams
are active swimmers
live in sea water
Pectoral fins are not clearly marked off from the body in
sharks
rays
whales
lung fishes
The flying fish Exocoetus belongs to the class
Dipnoi
Osteichthyes
Cyclostomata
Chondrichthyes
Air bladder in fishes does not help in
respiration
sound production
excretion
movement
The tympanum is absent in
dog fish
bony fishes
both (a) and (b)
all fishes
In Scoliodon, the thermoreceptors are
ampullae of lorenzini
lateral line system
stato-acoustic organs
neuromast organs
Torpedo is a name for
sawfish
seahorse
electric ray
sucker fish
Cod liver oil is a rich source of
vitamin A
iron
calcium
vitamin B complex
In a fish aquarium green aquatic plants are grown for
Oxygen
Carbon dioxide
Fish food
Decoration
Homocercal tail fin with symmetrical upper and lower lobes is present in
Scoliodon
Electric ray
Whale
Lung fish
Fillibranch gills are present in
all types fishes
only cartilaginous fishes
only bony fishes
sea dwelling fishes
Sea horse is a
mollusc
mammal
star fish
bony fish
Mermaid purse is
a shell
egg case of skate fishes
a colony of skate fishes
none of these
Fishes swim in water because they have
lungs
air bladders
cartilaginous skeleton
fins
Which fish is famous for cod liver oil ?
Shark
Cod
Amia
Both (a) and (b)