Annelids Structure and Movement Quiz
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Questions and Answers

What type of symmetry do adult echinoderms possess?

  • Spherical
  • Radial (correct)
  • Asymmetrical
  • Bilateral
  • What is the unique water vascular system in echinoderms connected to?

  • Gills
  • Tube feet (correct)
  • Muscles
  • Nerves
  • Which feature makes the endoskeleton of echinoderms peculiar?

  • Composed of calcium carbonate plates (correct)
  • Composed of chitin
  • Composed of cartilage
  • Composed of silica
  • In which form do echinoderms exhibit bilateral symmetry?

    <p>Larval form</p> Signup and view all the answers

    What is the function of the tube feet in echinoderms?

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

    Which material forms the bumps and spines on the endoskeleton of echinoderms?

    <p>Calcium carbonate</p> Signup and view all the answers

    Which phylum is characterized by flattened, elongate, bilaterally symmetrical animals with a branched gastrovascular cavity and a central nervous system with several nerve cords?

    <p>Phylum Platyhelminthes</p> Signup and view all the answers

    What is the purpose of the large, ventral muscular foot in mollusks?

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

    Which phylum is known for having a soft body covered with a mantle that secretes a hard shell?

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

    Which class of the phylum Platyhelminthes consists of free-living flatworms that have eyespots and move by means of their ciliated epidermis?

    <p>Class Turbellaria</p> Signup and view all the answers

    In which class of Platyhelminthes can we find flukes, parasitic flatworms with digestive tracts and complex life cycles involving multiple hosts?

    <p>Class Trematoda</p> Signup and view all the answers

    In annelids, in which segments is the clitellum usually formed?

    <p>Segments 9 to 11</p> Signup and view all the answers

    Which class of Platyhelminthes consists of tapeworms that lack a digestive tract and absorb food through their body walls?

    <p>Class Cestoda</p> Signup and view all the answers

    What is the significance of the girdle in a chiton's body structure?

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

    Which mollusk class has an oval flattened body made up of 8 overlapping plates?

    <p>Class Polyplacophora</p> Signup and view all the answers

    What is a distinguishing feature of Class Monogenea within the phylum Platyhelminthes?

    <p>Parasitism on fish</p> Signup and view all the answers

    Why is the pallial cavity important for a chiton?

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

    Which phylum includes animals with a digestive tract, respiratory system, and circulatory system, unlike the phylum Platyhelminthes?

    <p>Phylum Annelida</p> Signup and view all the answers

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