Bilateria Quiz
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Questions and Answers

Which phylum is not included in the grade Bilateria?

  • Cnidaria (correct)
  • Nematoda
  • Mollusca
  • Arthropoda

    • What type of symmetry is exhibited by the animals in grade Bilateria?

  • Bilateral symmetry (correct)
  • Asymmetry
  • Spherical symmetry
  • Radial symmetry

    • Which animals have secondarily developed radial symmetry?

  • Nematodes
  • Annelids
  • Platyhelminthes
  • Echinoderms (correct)

    • What type of animals are included in grade Bilateria?

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

    What type of symmetry is exhibited by animals in grade Bilateria?

    <p>Bilateral symmetry</p> Signup and view all the answers

    What is a distinct feature of animals with bilateral symmetry?

    <p>Distinct anterior end</p> Signup and view all the answers

    Which type of symmetry is characterized by the right side being approximately the same as the left side?

    <p>Bilateral symmetry</p> Signup and view all the answers

    Animals with bilateral symmetry have a distinct anterior and posterior end

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

    Bilateral symmetry means the right side of the animal is different from the left side

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

    Animals in grade Bilateria exhibit radial symmetry

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

    Explain the defining characteristic of animals in the grade Bilateria.

    <p>Animals in the grade Bilateria exhibit bilateral symmetry, with the right side being approximately the same as the left side and distinct anterior and posterior ends.</p> Signup and view all the answers

    Describe the significance of bilateral symmetry in animals.

    <p>Bilateral symmetry allows animals to have specialized sensory organs and movement in a specific direction, contributing to their evolutionary success and complexity.</p> Signup and view all the answers

    What is the advantage of having a distinct anterior and posterior end in animals with bilateral symmetry?

    <p>The distinct anterior and posterior ends in animals with bilateral symmetry allow for efficient movement and orientation towards food sources and away from threats.</p> Signup and view all the answers

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