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4

Air baldder in fishes does not help in

A. respiration

B. excretion

C. movement

D. none of these

Correct Answer :

D. none of these


Related Questions

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4

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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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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4

Study of sharks and rays is known as

A. Saurology

B. Traumatology

C. Torpedology

D. Ichthyology

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4

Parental care is a characteristic of

A. cat fish

B. dog fish

C. flying fish

D. seahorse

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4

Air baldder in fishes does not help in

A. respiration

B. excretion

C. movement

D. none of these

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4

In Scoliodon, the thermoreceptors are

A. ampullae of lorenzini

B. lateral line system

C. stato-acoustic organs

D. neuromast organs

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4

Cod liver oil is a rich source of

A. vitamin A

B. iron

C. calcium

D. vitamin B complex

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4

In a fish aquarium green aquatic plants are grown for

A. Oxygen

B. Carbon dioxide

C. Fish food

D. Decoration

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4

Which one of the cartilaginous fishes posses an operculum over the gill ?

A. Trygon

B. Torpedo

C. Chimaera

D. Sphynta

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4

Most venomous fish is

A. electric fish

B. saw fish

C. stone fish

D. dog fish

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4

The oldest living fish is

A. Coelocanth

B. Diodon

C. Sturgeon

D. Labeo

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4

Mermaid purse is

A. a shell

B. egg case of skate fishes

C. a colony of skate fishes

D. none of these

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4

Which fish is famous for cod liver oil ?

A. Shark

B. Cod

C. Amia

D. Both (a) and (b)

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4

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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4

The saw fish Pristis is a member of the class

A. Osteichthyes

B. Chondrichthyes

C. Dipnoi

D. Holocephali

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Pectoral fins are not clearly marked off from the body in

A. sharks

B. rays

C. whales

D. lung fishes

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In sharks, the scales are

A. placoid

B. cycloid

C. ctenoid

D. rhombiod

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4

The function of swim bladder in fishes is mainly

A. sound production

B. respiratory

C. locomotion

D. hydrostatic

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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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4

Fishes swim in water because they have

A. lungs

B. air bladders

C. cartilaginous skeleton

D. fins

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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

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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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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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Sharks and rays can be distinguished by

A. the nature of their scales

B. the position of the mouth

C. the position of gill slits

D. the kind of the tail fin

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In fishes, the lateral line receptors are

A. olfactoreceptors

B. rheoreceptors

C. gustoreceptors

D. chemoreceptors

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4

A muscular fin, aiding in propulsion is

A. dorsal

B. ventral

C. caudal

D. pelvic

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Chondrichthyes differs from Osteichthves in

A. having gills not covered by operculum

B. presence of lateral line system

C. presence of large scales

D. presence of terminal mouth

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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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Which of the following is not characteristic of chondricthyes ?

A. Placoid scales

B. Heterocercal tail fin

C. Ventrally placed mouth

D. Operculum

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4

Air bladder in fishes does not help in

A. respiration

B. sound production

C. excretion

D. movement