Characteristics of Phyla in Zoology
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Questions and Answers

What is the level of organisation exhibited by members of Platyhelminthes and other higher phyla?

  • Tissue level
  • Organ system level
  • Organ level (correct)
  • Cellular level

    • What is characteristic of the digestive system in Platyhelminthes?

  • It has only one opening that serves as both mouth and anus (correct)
  • It has two openings, mouth and anus
  • It has no anus
  • It has no mouth

    • What type of circulatory system is characterized by blood being pumped out of the heart and bathing cells and tissues directly?

  • Complete type
  • Incomplete type
  • Closed type
  • Open type (correct)

    • What is the term for animals that can be divided into equal halves by a plane passing through the centre?

    <p>Bilaterally symmetrical</p> Signup and view all the answers

    Which of the following groups of animals exhibit organ system level of organisation?

    <p>All of the above</p> Signup and view all the answers

    What is the term for the level of organisation where tissues are grouped together to form organs?

    <p>Organ level</p> Signup and view all the answers

    What is characteristic of the body structure of Annelids?

    <p>They have an organ system level of organisation</p> Signup and view all the answers

    What is an example of an animal that exhibits radial symmetry?

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

    What is the term for the layer of cells in the body of some invertebrates that contains a gel-like substance?

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

    What is the term for the process of categorising animals based on their symmetry?

    <p>Symmetry analysis</p> Signup and view all the answers

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