Phylum Mollusca Characteristics
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Questions and Answers

Which class of Mollusca is characterized by an elongate and dorsoventrally flattened body, reduced head and flattened foot, and a shell consisting of eight dorsal plates?

  • Gastropoda
  • Polyplacophora (correct)
  • Cephalopoda
  • Bivalvia
  • What is the function of the mantle cavity in Mollusca?

  • Digesting food
  • Excretion and gas exchange (correct)
  • Secreting the shell
  • Housing the reproductive organs
  • In which class of Mollusca is the coelom reduced to cavities around the heart, nephridia, and gonads?

  • Gastropoda (correct)
  • Cephalopoda
  • Polyplacophora
  • Bivalvia
  • In which class of Mollusca does respiration occur by gills and/or skin?

    <p>Bivalvia</p> Signup and view all the answers

    Which structure is usually present in Mollusca and used in scraping food?

    <p>Radula</p> Signup and view all the answers

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