Entamoeba histolytica is a human parasite usually found in

Represent schematically the life cycle of a malarial parasite.

‘Malaria' a common disease world wide is caused by a

Motile zygote of Plasmodium occurs in

Infection of Entamoeba histoloytica is preveneted by

Which of the following organisms is known to form abscesses in human liver, lungs, brain etc.