Homocercal tail fin with symmetrical upper and lower lobes is present in
Scoliodon
Electric ray
Whale
Lung fish
Correct Answer :
A. Scoliodon
Related Questions
The flying fish Exocoetus belongs to the class
Dipnoi
Osteichthyes
Cyclostomata
Chondrichthyes
Sea horse is a
mollusc
mammal
star fish
bony fish
Fish scales originate from one of the following?
Endoderm
Mesoderm
Ectoderm
Integument
The saw fish Pristis is a member of the class
Osteichthyes
Chondrichthyes
Dipnoi
Holocephali
Heterocercal tail fin is a characteristic of which group of fishes?
cartilaginous fishes
bony fishes
both (a) and (b)
all fishes except sharks
The function of swim bladder in fishes is mainly
sound production
respiratory
locomotion
hydrostatic
The pair of fins seen on either side of cloaca of fishes are the
pelvic fins
cloacal fins
anal fins
caudal fins
A homocercal tail is found in
teleosts
sharks
lung fishes
rays
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
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
Salmon is an example of
anandromous migration
catadromous migration
cartilaginous fish
none of these
In sharks, the scales are
placoid
cycloid
ctenoid
rhombiod
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
Which one of the cartilaginous fishes posses an operculum over the gill ?
Trygon
Torpedo
Chimaera
Sphynta
Pectoral fins are not clearly marked off from the body in
sharks
rays
whales
lung fishes
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
The oldest living fish is
Coelocanth
Diodon
Sturgeon
Labeo
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
A fish is characterised by the presence of
pharyngeal gills
paired fins
dermal scales
all of these
Which of the following fishes lack claspers, used for internal fertilization in cartilaginous fishes ?
Sharks
Stingray
Dogfish
Catfish
The pair of fins found near the operculum in bony fishes is known as
anterior fins
ray fins
pectoral fins
paired fins
In a fish aquarium green aquatic plants are grown for
Oxygen
Carbon dioxide
Fish food
Decoration
Cod liver oil is a rich source of
vitamin A
iron
calcium
vitamin B complex
Placoid scales are found in
cartilaginous fishes
bony fishes
lung fishes
paleontological fishes
In fishes, the lateral line receptors are
olfactoreceptors
rheoreceptors
gustoreceptors
chemoreceptors
Torpedo, the electric ray, could give a shock of about
10 volts
100 volts
50 volts
150 volts
An anamniote group is
Primates
Aves
Crocodiles
Pisces