Contamination of water with sewage is indicated by cysts of which bacteria
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Contamination of water with sewage is indicated by the cysts of bacteria Entamoeba.
Entamoeba histolytica is the common parasite that infects human and is wide spread through drinking water contamination and cause amoebiasis.
The cysts formed by this bacteria are considered as indicators of water pollution because these cysts survive unfavourable conditions and infect humans.
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Answer:
Contamination of water with sewage is indicated by cysts of Entamoeba histolytica.
Explanation:
- The part of wastewater produced by a community of people that is contaminated with feces or urine is known as sewage.
- This sewage may accidentally discharge into rivers during rainstorms or intentionally through pipes or open defecation. As a result, many life-threatening human illnesses including cholera, typhoid, and dysentery are all spread by sewage-polluted water.
- One such disease is Amoebiasis or amoebic dysentery which is cause by a parasite called Entamoeba histolytica.
- E. histolytica infects humans by the consumption of mature cysts from faecal contaminated water, causing amoebiasis which leads to severe diarrhea.
- Therefore, Entamoeba histolytica cysts are a sign of sewage contamination of the water.
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