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Human Health and Diseases — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYHuman Health and Diseases5 Marks
Question
How does Entamoeba histolytica causes amoebiosis ?
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Answer

  1. Amoebiosis is spread through ingestion of the cyst form of Entamoeba histolytica. This is a commensal organism.
  2. Cyst is a semi-dormant and hardy structure found in faeces of infected person.
  3. Non-encysted amoebae are called trophozoites. The trophozoites die quickly after leaving the body but may also be present in faeces.
  4. Trophozoites are rarely the source of new infections.
  5. The infection may remain asymptomatic for many days as Amoeba can remain latent in the gastrointestinal tract.

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