Cypraea belong to class

A. Pelecypoda

B. Scaphopoda

C. Bivalva

D. Gastropoda

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  1. Pearls of commercial value are produced by which of the following genera ?
  2. Which of the following produces a shell of great ornamental value ?
  3. Sea hare is the common name of
  4. Bivalve shell is found in the members of
  5. Head, foot and visceral mass - this combination of characters is diagnostic of
  6. Cephalopoda is a class of animals in which
  7. The intermediate host of liver fluke are fresh water snails
  8. The blood pigment of moliusca is
  9. A wood boring mollusc, well known for causing damage to ships and docks is
  10. Sea foam which is drifted to the sea shores is a/an
  11. Exclusively marine molluscs are
  12. Sea mica is a marine mollusc. Its specific name is
  13. Which of the following invertebrate phylum has the eye structure nearest to that of vertebrates ?
  14. Shipworm is
  15. The respiratory organs in a freshwater mussel are
  16. The respiratory organs in a fresh water mussel are
  17. A group of molluscs with 4 large ctenidia is presented by
  18. Prehensile tentacles of Cephalopoda are derived from
  19. Which of the following includes culminate unsegmented organisms ?
  20. Osphradium in molluscs is
  21. Well marked cephalistion is found in
  22. Sepia and Octopus are marine molluscs and their swift locomotion in water is affected by
  23. Ink glands as a means of escape from predators are present in
  24. 'Pearl mother layer' is
  25. Identify the larva which is present only in members of gastropoda :
  26. Osphradium is to test purity of water in
  27. A wood boring mollusc is
  28. The method of induction of foreign particles between the mantle and the shell of the pearl oyster and…
  29. The largest clam of Indian ocean is
  30. A mollusc which is adapted to an amphibious mode of life is