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Question

All stages of Plasmodium are digested in the stomach of female Anopheles except.

A
Sporozoites
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B
Gametocytes
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C
Erythrocytes
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D
Merozoites
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Solution

The correct option is B Gametocytes
Anopheles inoculated sporozoites in the human body during blood meal withdraw and follow its life cycle into two stages:-
1. Asexual Phase (infected stage in human by sporozoites)
2. Sexual Phase (infected stage in mosquito is gametocytes)
Sporozoites enter into the liver cells called as hepatocytes that mature into schizonts & divide into daughter cells merozoites, and which infects red blood cells. In RBC, merozoites developed into trophozoites which then develops into merozoites. Again some trophozoites form gametocytes by
a sexual method and infect the mosquitos. Inside mosquito, again formation of sporozoites takes place and again infected to the human body. This cycle repeats again n again.
So, the correct answer is 'Gametocytes'

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