Which one is not a symptom of Entamoeba histolytica infection

What causes Malaria ?

Assertion : Plasmodium vivax is responsible for malaria.

Reason : Malaria is caused by polluted water.

Represent schematically the life cycle of a malarial parasite.

The infectious stage of Plasmodium that enters the human body is :

Which of the following is a parasite protozoan