Fishes swim in water because they have
lungs
air bladders
cartilaginous skeleton
fins
Correct Answer :
D. fins
Related Questions
Fishes swim in water because they have
lungs
air bladders
cartilaginous skeleton
fins
A homocercal tail is found in
teleosts
sharks
lung fishes
rays
The oldest living fish is
Coelocanth
Diodon
Sturgeon
Labeo
Homocercal tail fin with symmetrical upper and lower lobes is present in
Scoliodon
Electric ray
Whale
Lung fish
Chondrichthyes differs from Osteichthves in
having gills not covered by operculum
presence of lateral line system
presence of large scales
presence of terminal mouth
Mermaid purse is
a shell
egg case of skate fishes
a colony of skate fishes
none of these
The tympanum is absent in
dog fish
bony fishes
both (a) and (b)
all fishes
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
Pectoral fins are not clearly marked off from the body in
sharks
rays
whales
lung fishes
Parental care is a characteristic of
cat fish
dog fish
flying fish
seahorse
A muscular fin, aiding in propulsion is
dorsal
ventral
caudal
pelvic
Fish scales originate from one of the following?
Endoderm
Mesoderm
Ectoderm
Integument
In a fish aquarium green aquatic plants are grown for
Oxygen
Carbon dioxide
Fish food
Decoration
In fishes, the lateral line receptors are
olfactoreceptors
rheoreceptors
gustoreceptors
chemoreceptors
Air bladder in fishes does not help in
respiration
sound production
excretion
movement
Torpedo, the electric ray, could give a shock of about
10 volts
100 volts
50 volts
150 volts
Salmon is an example of
anandromous migration
catadromous migration
cartilaginous fish
none of these
Anandromous fishes are those which
live in sea water and migrate to fresh water rivers and lakes for breeding
live in fresh water and migrate to sea for breeding
both (a) and (b)
none of these
Heterocercal tail fin is a characteristic of which group of fishes?
cartilaginous fishes
bony fishes
both (a) and (b)
all fishes except sharks
The saw fish Pristis is a member of the class
Osteichthyes
Chondrichthyes
Dipnoi
Holocephali
In Scoliodon, the thermoreceptors are
ampullae of lorenzini
lateral line system
stato-acoustic organs
neuromast organs
Most venomous fish is
electric fish
saw fish
stone fish
dog fish
The fish used to control spread of malaria is
Pterois
Fistularia
Gambusia
None of these
Which of the following is not characteristic of chondricthyes ?
Placoid scales
Heterocercal tail fin
Ventrally placed mouth
Operculum
Placoid scales are found in
cartilaginous fishes
bony fishes
lung fishes
paleontological fishes
The pair of fins seen on either side of cloaca of fishes are the
pelvic fins
cloacal fins
anal fins
caudal fins
A group of cartilaginous fishes specialised for bottom dwelling is
sharks
whales
lung fishes
rays
Parental care by males is found in
hippocampus
labeo
anabes
none of these
Air baldder in fishes does not help in
respiration
excretion
movement
none of these
Sharks and rays can be distinguished by
the nature of their scales
the position of the mouth
the position of gill slits
the kind of the tail fin