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Eduncle posted an MCQ
October 18, 2019 • 23:58 pm 0 points
  • IIT JAM
  • Geology (GG)

Choose the correct combination(s) of type of dentition of Bivalvia and the corresponding representative genus.

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    Eduncle Best Answer

    (A) Taxodont : Numerous, identical teeth that are serrated in nature.
              Eg. - Arca, Nucula
    (B) Isodont : 2 identical cardinal teeth present below the umbons
              Eg. - Spondylus
    (C) Pachydont : Dentition in sessile rudist bivalves where teeth are large, heavy and blunt.
              Eg. - Hippurites
    (D) Desmodont : Dentition highly reduced or even absent but accessory structures for articulation of values are present.
              Eg. - Mya
    So, all the four options are correctly matched.

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