Digestive Systems in Eumetazoans Quiz
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Questions and Answers

What is a characteristic of sponges in terms of feeding mechanisms?

  • They are detritivores
  • They are predaceous feeders
  • They are suspension filter feeders (correct)
  • They are parasites
  • Which statement accurately describes the canal system in sponges?

  • The canal system is absent in sponges with radial symmetry
  • The canal system allows for both ingestion and excretion in sponges (correct)
  • The canal system is found only in freshwater sponges
  • The canal system is present in all sponge species
  • In terms of diversity of sponge body designs, what can be said about sponges with radial symmetry?

  • They are all sessile organisms
  • They lack a skeletal system
  • They have a simplified body plan compared to asymmetrical sponges (correct)
  • They do not possess amoebocytes
  • Which type of sponge body design has the fastest water movement due to a reduced spongocoel?

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

    Which class of sponges has spicules composed of silica instead of calcium carbonate?

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

    Which type of sponge body design is the most complex and largest?

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

    What is the primary function of amoebocytes in sponges?

    <p>Transporting sperm to eggs during sexual reproduction</p> Signup and view all the answers

    Which type of canal system is present in all members of Class Sclerospongiae?

    <p>Leuconoid canal system</p> Signup and view all the answers

    How do most sponges achieve sexual reproduction?

    <p>Internal fertilization with eggs and sperm released into the water</p> Signup and view all the answers

    Which material is NOT found in the skeletons of sponges in Class Sclerospongiae?

    <p>Keratin proteins</p> Signup and view all the answers

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