Mermaid purse is
a shell
egg case of skate fishes
a colony of skate fishes
none of these
Correct Answer :
B. egg case of skate fishes
Related Questions
Water into the gills of fishes passes through
nostrils
mouth
gill slits
swimming bladder
Fish scales originate from one of the following?
Endoderm
Mesoderm
Ectoderm
Integument
The pair of fins seen on either side of cloaca of fishes are the
pelvic fins
cloacal fins
anal fins
caudal fins
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
The fish used to control spread of malaria is
Pterois
Fistularia
Gambusia
None of these
Mermaid purse is
a shell
egg case of skate fishes
a colony of skate fishes
none of these
In sharks, the scales are
placoid
cycloid
ctenoid
rhombiod
A muscular fin, aiding in propulsion is
dorsal
ventral
caudal
pelvic
Study of sharks and rays is known as
Saurology
Traumatology
Torpedology
Ichthyology
Heterocercal tail fin is a characteristic of which group of fishes?
cartilaginous fishes
bony fishes
both (a) and (b)
all fishes except sharks
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
Torpedo, the electric ray, could give a shock of about
10 volts
100 volts
50 volts
150 volts
Parental care by males is found in
hippocampus
labeo
anabes
none of these
Torpedo is a name for
sawfish
seahorse
electric ray
sucker fish
Most venomous fish is
electric fish
saw fish
stone fish
dog fish
Salmon is an example of
anandromous migration
catadromous migration
cartilaginous fish
none of these
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
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
Fillibranch gills are present in
all types fishes
only cartilaginous fishes
only bony fishes
sea dwelling fishes
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
The pair of fins found near the operculum in bony fishes is known as
anterior fins
ray fins
pectoral fins
paired fins
Which fish is famous for cod liver oil ?
Shark
Cod
Amia
Both (a) and (b)
The flying fish Exocoetus belongs to the class
Dipnoi
Osteichthyes
Cyclostomata
Chondrichthyes
A group of cartilaginous fishes specialised for bottom dwelling is
sharks
whales
lung fishes
rays
Homocercal tail fin with symmetrical upper and lower lobes is present in
Scoliodon
Electric ray
Whale
Lung fish
Fishes swim in water because they have
lungs
air bladders
cartilaginous skeleton
fins
Chondrichthyes differs from Osteichthves in
having gills not covered by operculum
presence of lateral line system
presence of large scales
presence of terminal mouth
Which one of the cartilaginous fishes posses an operculum over the gill ?
Trygon
Torpedo
Chimaera
Sphynta