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B
Metacryptomerozoites
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C
Merozoites
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D
Trophozoites
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Solution
The correct option is C Merozoites Once in the circulation, the merozoites invade the red cells and develop into trophozoites. In the course of their development, they absorb the haemoglobin of the red cells and leave as the product of digestion a pigment called as haemozoin, a combination of haematin and protein. This iron-containing pigment is seen in the body of the parasite in the form of dark granules, which are more obvious in the later stages of development. The simultaneous rupture of the infected erythrocytes and the concomitant release of antigens and waste products accounts for the intermittent fever paroxysms associated with malaria.