Mastigophora Subphylum Characteristics
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Questions and Answers

What is the organ of locomotion in Subphylum Mastigophora?

  • Cilia
  • Cell wall
  • Pseudopodia
  • Flagella (correct)

    • What is the intracellular portion of the flagella called in Mastigophora?

  • Axoplast
  • Blepharoplast
  • Axostyle or axoneme (correct)
  • Kinetoplast

    • Where are the flagella located in most flagellates?

  • In the cytoplasm
  • External (correct)
  • Internal
  • In the nucleus

    • Where do the flagella arise from in Mastigophora?

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

    What is the habitat of Dientamoeba fragilis?

    <p>Cecum and colon</p> Signup and view all the answers

    Who first observed Giardia lamblia?

    <p>A.V. Leeuwenhoek</p> Signup and view all the answers

    What is the characteristic movement of Retortamonas intestinalis?

    <p>Jerky movement</p> Signup and view all the answers

    What is the infective stage of Retortamonas intestinalis?

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

    How can both forms of Retortamonas intestinalis be demonstrated?

    <p>By permanent staining of the stool sample</p> Signup and view all the answers

    What is the shape of Retortamonas intestinalis?

    <p>Elongated pyriform or oval</p> Signup and view all the answers

    What is the recent reclassification of Dientamoeba fragilis based on?

    <p>Electron microscopic studies</p> Signup and view all the answers

    In which age group is a higher incidence of Dientamoeba fragilis reported?

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

    What is the characteristic movement of the trophozoite of Chilomastix mesnili?

    <p>Stiff, rotary movement</p> Signup and view all the answers

    What supports the cytostome of Chilomastix mesnili?

    <p>Two cytostomal fibrils, with the right one being prominent and curved, and the left one being straight and less conspicuous</p> Signup and view all the answers

    What is the characteristic feature at the anterior end of the cytoplasm of Chilomastix mesnili?

    <p>Remnant of the curved cytostomal fibrils, called as shepherd’s crook</p> Signup and view all the answers

    What is the shape of the cyst of Chilomastix mesnili?

    <p>Lemon-shaped with a narrow anterior end</p> Signup and view all the answers

    What is the number of nuclei in the cyst of Chilomastix mesnili?

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

    How many forms does Enteromonas hominis exist in?

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

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