Malaria is spread by

Some of the events that occur during the life cycle of $Plasmodium$ are given below. Identify the correct statement.

Identify the correct statements from the following:
$(i)$ The cryptozoite ingests food and becomes spherical.
$(ii)$ Sporozoites enter the human blood.
$(iii)$ Two stages of the life cycle are observed in Plasmodium.
$(iv)$ The cryptozoite transforms into cryptomerozoites.

Chagas disease is caused by

Schuffner's dots are related to

Which of the following is the vector for the disease malaria?