Phylum Porifera Classification Quiz
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Questions and Answers

Which type of cells are responsible for producing a sponge's skeleton?

  • Choanocytes
  • Amoebocytes (correct)
  • Osculum cells
  • Porocytes
  • What is the name of the large opening through which water leaves the spongocoel in a sponge?

  • Ostium
  • Porocyte
  • Osculum (correct)
  • Choanocyte
  • Which cell type in sponges can transform into any other cell type required by the sponge?

  • Porocytes
  • Choanocytes
  • Flagellated cells
  • Amoebocytes (correct)
  • What is the role of choanocytes in a sponge's feeding process?

    <p>Creating currents to force water through the sponge</p> Signup and view all the answers

    Which structure surrounds the small pores (ostia) through which water enters a sponge?

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

    What is the composition of a sponge's skeletal system made of flexible protein fiber?

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

    In which part of a sponge would you find flagellated choanocytes lining the interior?

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

    What is the function of amoebocytes in sponges?

    <p>Producing spicules</p> Signup and view all the answers

    Which type of cells open and close to control water flow into a sponge through its pores?

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

    What are needle-like structures found in a sponge's skeletal system called?

    <p>Amoebocytes spicules</p> Signup and view all the answers

    Study Notes

    Sponge Cells and Structure

    • Amoebocytes are responsible for producing a sponge's skeleton.
    • Osculum is the name of the large opening through which water leaves the spongocoel in a sponge.
    • Amoebocytes are totipotent, meaning they can transform into any other cell type required by the sponge.
    • Choanocytes create water currents that draw food particles into the sponge.
    • Porocytes surround the small pores (ostia) through which water enters a sponge.
    • Spongin, a flexible protein fiber, is the composition of a sponge's skeletal system.
    • Spongocoel is the central cavity of a sponge where flagellated choanocytes line the interior.
    • Amoebocytes play various roles in sponges, including transporting food, producing reproductive cells, generating skeletal elements, and repairing injuries.
    • Porocytes are the cells responsible for opening and closing to control water flow into a sponge through its pores.
    • Spicules are needle-like structures found in a sponge's skeletal system, providing support and protection.

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    Description

    Test your knowledge on the classification of sponges in Phylum Porifera, including the three canal systems and different body designs. Learn about the significance of spicules and the shapes/structures of sponges.

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