Question

(i) How and at what stage does Plasmodium enter into a human body ?
(ii) Why does the victim show symptoms of high fever?
(iii)With the help of a flow chart only, show the stages of asexual reproduction in the life cycle of the parasite in the infected human.

Answer 1

Answer:

(i) When an infected female Anopheles mosquito bites a person, the sporozoites are injected into the body.

(ii) The rupture of RBCs is associated with the release of a toxic substance, haemozoin, which is responsible for the chill and fever recurring every three to four days.

(iii)

Answer 2

Malaria infection begins when an infected female Anopheles mosquito bites a person, injecting Plasmodium parasites, in the form of sporozoites, into the bloodstream. The sporozoites pass quickly into the human liver. The sporozoites multiply asexually in the liver cells over the next 7 to 10 days, causing no symptoms.......