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4

The largest invertebrate is

A. giant clam

B. giant squid

C. giant Snail

D. giant octopus

Correct Answer :

B. giant squid


Related Questions

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Shipworm is

A. an annelid

B. an arthropod

C. an echinoderm

D. a mollusc

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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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Aplysia, a marine mollusc is commonly known as

A. devilfish

B. cuttlefish

C. black mussel

D. sea hare

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The largest invertebrate is

A. giant clam

B. giant squid

C. giant Snail

D. giant octopus

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4

'Pearl mother layer' is

A. prismatic layer

B. periostracum

C. nacre

D. mantle

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Internal shell is present in

A. Sepia

B. Lamellidens

C. Chiron

D. Pila

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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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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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The respiratory organs in a fresh water mussel are

A. pulmonary sac

B. ctenidia

C. book lungs

D. trachea

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Well developed radula is absent in

A. Gastropoda

B. Criton

C. Bivalvia

D. Monoplacophora

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A group of molluscs with 4 large ctenidia is presented by

A. Nautilus

B. Pila

C. Argpnata

D. Unio

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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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4

A wood boring mollusc is

A. patella

B. limax

C. teredo

D. chiton

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Which of the following invertebrate phylum has the eye structure nearest to that of vertebrates ?

A. Annelida

B. Moliusca

C. Echinodermata

D. Arthropoda

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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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Which of the following produces a shell of great ornamental value ?

A. Pila

B. Unio

C. Mytilus

D. Nautilus

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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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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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4

The scientific name of sea mouse is

A. Chaetopterus

B. Aphrodite

C. Amphihite

D. Limidus

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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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A wood boring mollusc, well known for causing damage to ships and docks is

A. Teredo

B. Doris

C. Loligo

D. Octopus

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Cephalopoda is a class of animals in which

A. foot is located on head

B. head is fused with thorax

C. head is located on foot

D. notochord extends upto cephalic region

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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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A radula is typically found in

A. Unio

B. Vila

C. Mytilus

D. Loligo

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The reduced foot and tubular sheil is present in

A. Gastropoda

B. Scaphopoda

C. Bivalva

D. Cephalopoda

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Pectan is commonly called

A. scallop

B. sea mussel

C. razor shell

D. any of these

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The blood pigment of moliusca is

A. myoglobin

B. anthocyanin

C. haemocyanin

D. hemoglobin

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The most primitive mollusc is

A. Neoplina

B. Chiton

C. Dentalium

D. Patella

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Strike out the odd things :

A. Crab

B. Aretticola

C. Milipede

D. Centipede