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4

The largest clam of Indian ocean is

A. Unio

B. Mytilus

C. Teredo

D. Tridacna

Correct Answer :

D. Tridacna


Related Questions

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Pearls of commercial value are produced by which of the following genera ?

A. Pinctada

B. Unio

C. Anodonta

D. Ostrea

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A radula is typically found in

A. Unio

B. Vila

C. Mytilus

D. Loligo

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Pectan is commonly called

A. scallop

B. sea mussel

C. razor shell

D. any of these

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A mollusc which is adapted to an amphibious mode of life is

A. sea hare

B. Pond snail

C. fresh water mussel

D. chiton

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Well marked cephalistion is found in

A. Gastropoda

B. Caphalopoda

C. Bivalvia

D. Scaphopoda

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An example of a true limpet is

A. Sepia

B. Loligo

C. Patella

D. Nautilus

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Sepia belongs to class

A. Amphineve

B. Gastropoda

C. Scaphopoda

D. Caphalopoda

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Pteropods are small marine gastropods, often termed as

A. elephant tusk shells

B. butterflies of the sea

C. lerrfons of the sea

D. cucumbers of the sea

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4

The elephant tusk shell is

A. dentalium

B. cypraea

C. nautilus

D. pinctada

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The respiratory organs in a fresh water mussel are

A. pulmonary sac

B. ctenidia

C. book lungs

D. trachea

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4

The reduced foot and tubular sheil is present in

A. Gastropoda

B. Scaphopoda

C. Bivalva

D. Cephalopoda

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4

Devil fish is the common name of

A. Sepia

B. Loligo

C. Octopus

D. Mytilus

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The intermediate host of liver fluke are fresh water snails

A. limax and helix

B. pila and helix

C. lymnaea and planorbis

D. none of these

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Sea mica is a marine mollusc. Its specific name is

A. Chiton

B. Unio

C. Teredo

D. Nautilus

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Bivalve shell is found in the members of

A. Caphalopoda

B. Gastropoda

C. Pelecypoda

D. Scaphopoda

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The method of induction of foreign particles between the mantle and the shell of the pearl oyster and thus stimulating the pearl formation, was introduced in Japan by

A. Mikimoto

B. Katu

C. Haeckel

D. Von Mohl

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The best developed brain than any other invertebrate is seen in

A. Octopus

B. Sepia

C. Mytilus

D. Teredo

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Identify the larva which is present only in members of gastropoda :

A. Trochophore

B. Veliger

C. Glochidium

D. Muller's larva

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4

Sepia and Octopus are marine molluscs and their swift locomotion in water is affected by

A. expelling water in a jet through siphon

B. lashing moment of their cephalic arms

C. characteristic undulations of their lateral fins

D. none of these

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Well developed radula is absent in

A. Gastropoda

B. Criton

C. Bivalvia

D. Monoplacophora

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4

Strike out the odd things :

A. Crab

B. Aretticola

C. Milipede

D. Centipede

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Sea foam which is drifted to the sea shores is a/an

A. external shell of cuttle fish

B. internal shell of cuttle fish

C. bones of octopus

D. calcareous matter of cuttle fish

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4

The generic name of apple snail is

A. Pila

B. Aplysia

C. Helix

D. Aphrodite

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The respiratory organs in a freshwater mussel are

A. book lungs

B. pulmonary sacs

C. gills

D. respiratory siphons

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Ink glands as a means of escape from predators are present in

A. Sepia (Caphalopoda)

B. Uttio (Pelecypoda)

C. Dentalium (Scaphopoda)

D. Pila (Gastropoda)

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Exclusively marine molluscs are

A. Caphalopods

B. Scaphopods

C. Bivalva

D. Gastropods

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Osphradium in molluscs is

A. a sensory organ for balancing

B. a sensory organ for smell

C. swimming organ

D. none of these

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The largest clam of Indian ocean is

A. Unio

B. Mytilus

C. Teredo

D. Tridacna

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4

Osphradium is to test purity of water in

A. Pila

B. Starfish

C. Housefly

D. Earthworm

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Shipworm is

A. an annelid

B. an arthropod

C. an echinoderm

D. a mollusc