Q. The infective stage of Entamoeba histolytica is

 1596  238 Punjab PMETPunjab PMET 1999 Report Error

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 , vegetables and food are the primary causes.