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4

The flying fish Exocoetus belongs to the class

A. Dipnoi

B. Osteichthyes

C. Cyclostomata

D. Chondrichthyes

Correct Answer :

B. Osteichthyes


Related Questions

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4

An anamniote group is

A. Primates

B. Aves

C. Crocodiles

D. Pisces

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4

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

Placoid scales are found in

A. cartilaginous fishes

B. bony fishes

C. lung fishes

D. paleontological fishes

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4

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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4

Most venomous fish is

A. electric fish

B. saw fish

C. stone fish

D. dog fish

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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

The pair of fins found near the operculum in bony fishes is known as

A. anterior fins

B. ray fins

C. pectoral fins

D. paired fins

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4

Pectoral fins are not clearly marked off from the body in

A. sharks

B. rays

C. whales

D. lung fishes

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4

In sharks, the scales are

A. placoid

B. cycloid

C. ctenoid

D. rhombiod

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4

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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4

Fishes swim in water because they have

A. lungs

B. air bladders

C. cartilaginous skeleton

D. fins

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4

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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4

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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4

Salmon is an example of

A. anandromous migration

B. catadromous migration

C. cartilaginous fish

D. none of these

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4

The tympanum is absent in

A. dog fish

B. bony fishes

C. both (a) and (b)

D. all fishes

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4

The oldest living fish is

A. Coelocanth

B. Diodon

C. Sturgeon

D. Labeo

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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

Cod liver oil is a rich source of

A. vitamin A

B. iron

C. calcium

D. vitamin B complex

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4

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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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

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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4

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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4

Sea horse is a

A. mollusc

B. mammal

C. star fish

D. bony fish

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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

In fishes, the lateral line receptors are

A. olfactoreceptors

B. rheoreceptors

C. gustoreceptors

D. chemoreceptors

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4

The fish used to control spread of malaria is

A. Pterois

B. Fistularia

C. Gambusia

D. None of these

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4

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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4

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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4

Air bladder in fishes does not help in

A. respiration

B. sound production

C. excretion

D. movement

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4

Fillibranch gills are present in

A. all types fishes

B. only cartilaginous fishes

C. only bony fishes

D. sea dwelling fishes