What is $Hemozoin$?

Which shape does the sporozoite acquire after obtaining nutrition from the liver cells?

Maurer's dots occur in human $RBCs$ infected by

Assertion $A$: $A$ patient suffering from malaria experiences chills and high fever.
Reason $R$: The rupture of red blood cells by the $Plasmodium$ parasite releases a toxic substance called haemozoin into the blood.

Infection of $Entamoeba$ $histolytica$ is prevented by

Plasmodium gametocytes are formed in