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Q.
The infective stage of Entamoeba histolytica is
Punjab PMETPunjab PMET 1999
Solution:
Transmissions of Entamoeba histolytica from man to man is effected through its encyst and infection occurs through the ingestion of these cysts. Mature quadrinucleate cysts are the infective forms of this parasite. Faecal contaminations of drinking $ {{H}_{2}}O $ , vegetables and food are the primary causes.