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Heterocercal tail fin is a characteristic of which group of fishes?

A. cartilaginous fishes

B. bony fishes

C. both (a) and (b)

D. all fishes except sharks

Correct Answer :

A. cartilaginous fishes


Related Questions

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The oldest living fish is

A. Coelocanth

B. Diodon

C. Sturgeon

D. Labeo

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Heterocercal tail fin is a characteristic of which group of fishes?

A. cartilaginous fishes

B. bony fishes

C. both (a) and (b)

D. all fishes except sharks

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Salmon is an example of

A. anandromous migration

B. catadromous migration

C. cartilaginous fish

D. none of these

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Anandromous fishes are those which

A. live in sea water and migrate to fresh water rivers and lakes for breeding

B. live in fresh water and migrate to sea for breeding

C. both (a) and (b)

D. none of these

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A fish is characterised by the presence of

A. pharyngeal gills

B. paired fins

C. dermal scales

D. all of these

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A group of cartilaginous fishes specialised for bottom dwelling is

A. sharks

B. whales

C. lung fishes

D. rays

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Rays have

A. a rounded body with ventral gill clefts

B. a flattened body with dorsal gill clefts

C. a flattened body with ventral gill clefts

D. any of these

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Chondricthyes is not characterised by the presence of

A. Placoid scales

B. Ventral mouth

C. Operculum

D. Five pairs of gill slits

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Which fish is famous for cod liver oil ?

A. Shark

B. Cod

C. Amia

D. Both (a) and (b)

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Water into the gills of fishes passes through

A. nostrils

B. mouth

C. gill slits

D. swimming bladder

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Which of the following is not true about bony fishes ?

A. Five pairs of gills covered with operculum

B. Homocercal tail

C. Eight pairs of gills

D. Any of these

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Sea horse is a

A. mollusc

B. mammal

C. star fish

D. bony fish

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In Scoliodon, the thermoreceptors are

A. ampullae of lorenzini

B. lateral line system

C. stato-acoustic organs

D. neuromast organs

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Study of sharks and rays is known as

A. Saurology

B. Traumatology

C. Torpedology

D. Ichthyology

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A homocercal tail is found in

A. teleosts

B. sharks

C. lung fishes

D. rays

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An anamniote group is

A. Primates

B. Aves

C. Crocodiles

D. Pisces

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Which of the following fishes lack claspers, used for internal fertilization in cartilaginous fishes ?

A. Sharks

B. Stingray

C. Dogfish

D. Catfish

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Homocercal tail fin with symmetrical upper and lower lobes is present in

A. Scoliodon

B. Electric ray

C. Whale

D. Lung fish

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In fishes, the lateral line receptors are

A. olfactoreceptors

B. rheoreceptors

C. gustoreceptors

D. chemoreceptors

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The saw fish Pristis is a member of the class

A. Osteichthyes

B. Chondrichthyes

C. Dipnoi

D. Holocephali

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Parental care by males is found in

A. hippocampus

B. labeo

C. anabes

D. none of these

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Torpedo, the electric ray, could give a shock of about

A. 10 volts

B. 100 volts

C. 50 volts

D. 150 volts

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Air baldder in fishes does not help in

A. respiration

B. excretion

C. movement

D. none of these

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Placoid scales are found in

A. cartilaginous fishes

B. bony fishes

C. lung fishes

D. paleontological fishes

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Which of the following is a Shark ?

A. Dasyatis

B. Chimaera

C. Sphyma

D. Torpedo

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The pair of fins seen on either side of cloaca of fishes are the

A. pelvic fins

B. cloacal fins

C. anal fins

D. caudal fins

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A well developed swim bladder is seen in fishes which

A. live at the bottom of rivers

B. live in shallow streams

C. are active swimmers

D. live in sea water

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A muscular fin, aiding in propulsion is

A. dorsal

B. ventral

C. caudal

D. pelvic

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The fish used to control spread of malaria is

A. Pterois

B. Fistularia

C. Gambusia

D. None of these

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Fillibranch gills are present in

A. all types fishes

B. only cartilaginous fishes

C. only bony fishes

D. sea dwelling fishes