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

What is the habitat of Dientamoeba fragilis?

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

Who first observed Giardia lamblia?

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

What is the characteristic movement of Retortamonas intestinalis?

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

What is the infective stage of Retortamonas intestinalis?

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

How can both forms of Retortamonas intestinalis be demonstrated?

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

What is the shape of Retortamonas intestinalis?

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

What is the recent reclassification of Dientamoeba fragilis based on?

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

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

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

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

<p>Stiff, rotary movement (B)</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 (C)</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 (B)</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 (C)</p> Signup and view all the answers

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

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

How many forms does Enteromonas hominis exist in?

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

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