Animal Diversity and Characterization
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Questions and Answers

What is the characteristic that distinguishes animals from other organisms?

  • Ability to photosynthesize
  • Having a cell wall
  • Being able to move on their own
  • Being eukaryotic and multicellular (correct)

    • What is the name of the germ layer that gives rise to the central nervous system?

  • Mesoderm
  • Ectoderm (correct)
  • Coelom
  • Endoderm

    • What is the term for the development of a head in animals?

  • Radial symmetry
  • Cephalization (correct)
  • Bilateral symmetry
  • Tissue layer organization

    • What is the name of the phylum that includes sponges?

    <p>Porifera (A)</p> Signup and view all the answers

    What is the term for a true fluid body cavity derived from mesoderm?

    <p>Coelom (B)</p> Signup and view all the answers

    What is the main characteristic of animals that distinguishes them from plants?

    <p>Heterotrophy (B)</p> Signup and view all the answers

    What is the main characteristic of the body form of jellyfishes and corals?

    <p>Radial symmetry (B)</p> Signup and view all the answers

    Which phylum is characterized by the presence of a true body cavity?

    <p>Annelida (A)</p> Signup and view all the answers

    What is the function of nematocysts in jellyfishes?

    <p>Stinging cells (C)</p> Signup and view all the answers

    Which phylum is characterized by the presence of pseudocoelomates?

    <p>Nematoda (B)</p> Signup and view all the answers

    What is the function of parapodia in polychaetes?

    <p>Locomotion (D)</p> Signup and view all the answers

    What is the function of hirudin secreted by leeches?

    <p>Prevents blood coagulation (D)</p> Signup and view all the answers

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