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4

A muscular fin, aiding in propulsion is

A. dorsal

B. ventral

C. caudal

D. pelvic

Correct Answer :

C. caudal


Related Questions

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4

A homocercal tail is found in

A. teleosts

B. sharks

C. lung fishes

D. rays

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4

A group of cartilaginous fishes specialised for bottom dwelling is

A. sharks

B. whales

C. lung fishes

D. rays

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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

The oldest living fish is

A. Coelocanth

B. Diodon

C. Sturgeon

D. Labeo

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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

Most venomous fish is

A. electric fish

B. saw fish

C. stone fish

D. dog fish

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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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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

Torpedo is a name for

A. sawfish

B. seahorse

C. electric ray

D. sucker fish

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4

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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4

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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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

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

An anamniote group is

A. Primates

B. Aves

C. Crocodiles

D. Pisces

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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

Air bladder in fishes does not help in

A. respiration

B. sound production

C. excretion

D. movement

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4

Parental care by males is found in

A. hippocampus

B. labeo

C. anabes

D. none of these

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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

The flying fish Exocoetus belongs to the class

A. Dipnoi

B. Osteichthyes

C. Cyclostomata

D. Chondrichthyes

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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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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

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

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

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

In fishes, the lateral line receptors are

A. olfactoreceptors

B. rheoreceptors

C. gustoreceptors

D. chemoreceptors

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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

Which of the following does not have lateral line organs ?

A. Whale

B. Tadpole

C. Aquatic urodeles

D. Common Indian dog fish

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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

The tympanum is absent in

A. dog fish

B. bony fishes

C. both (a) and (b)

D. all fishes