Arrange the given steps involved life cycle of Plasmodium in correct sequence.
(A) Plasmodium enters human body as sporozoites through the bite of infected mosquito.
(B) The rupture of RBCs is associated with release of a toxic substance, haemozoin.
(C) Female mosquito takes up gametocytes with blood meal.
(D) The parasites initially multiply within the liver cells.
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → (A), (D), (B), (C)
(A) Plasmodium enters the human body as sporozoites — first. The infective form comes in through the bite of an infected female Anopheles mosquito.
(D) The parasites initially multiply within the liver cells — second. From the blood the sporozoites go to the liver and multiply there.
(B) The rupture of RBCs is associated with release of haemozoin — third. The parasites next attack the red blood cells and burst them. The released haemozoin causes the chill and high fever.
(C) Female mosquito takes up gametocytes with blood meal — last. When a mosquito bites an infected person, the parasites enter its body and develop further. They later form sporozoites in its salivary glands, ready to start the cycle in the next human.
NCERT Extract:
Common Diseases in Humans – …
