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Question

Life cycle of Plasmodium species causing benign tertian malaria consists of

A
Erythrocytic cycle
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B
Post-erythrocytic cycle
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C
Pre-erythrocytic cycle
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D
All of the above
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Solution

The correct option is D All of the above
Benign tertian malaria ( by Plasmodium vivax and P. ovale) causes a fever every second day. In the pre-erythrocytic cycle, thousands of merozoites are produced from each schizont. As the merozoites are released, they invade erythrocytes and initiate the erythrocytic cycle, where the parasite digests hemoglobin to obtain amino acids for protein synthesis. Following the erythrocytic cycle, which lasts for seventy two hours on average, six to fourteen merozoites are released to invade other erythrocytes. Finally, some of the merozoites develop into either micro or macrogametocyte. The two types of gametocytes are taken into the mosquito during feeding and the cycle is repeated. This is the post-erythrocytic cycle.
Thus, the correct answer is option (D).

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