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Identify the larva which is present only in members of gastropoda :
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Shipworm is
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The reduced foot and tubular sheil is present in
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The respiratory organs in a freshwater mussel are
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The largest clam of Indian ocean is
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The blood pigment of moliusca is
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Scientific name of shipworm is
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The elephant tusk shell is
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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
D. calcareous matter of cuttle fish
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Cephalopoda is a class of animals in which
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C. head is located on foot
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A mollusc which is adapted to an amphibious mode of life is
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A wood boring mollusc, well known for causing damage to ships and docks is
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Osphradium in molluscs is
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Which of the following invertebrate phylum has the eye structure nearest to that of vertebrates ?
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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
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Internal shell is present in
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A group of molluscs with 4 large ctenidia is presented by
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Sea hare is the common name of
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Prehensile tentacles of Cephalopoda are derived from
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Sea mica is a marine mollusc. Its specific name is
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The most primitive mollusc is
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Which of the following includes culminate unsegmented organisms ?
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Exclusively marine molluscs are