Biology, asked by vchandola1613, 11 months ago

Structure of life cycle pathogenicity disease cause symptoms

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Answered by nishabalakumar2003
0

Answer:

uninucleate sporozoites in the salivary glands of infected mosquitoes are injected into a human host when the mosquito feeds. The sporozoites rapidly invade liver parenchymal cells, where they mature into liver-stage schizonts, which burst to release 2,000 to 40,000 uninucleate merozoites. In P vivax and P ovale infections, maturation of the schizont may be delayed for 1 to 2 years. Each merozoite can infect a red blood cell. Within the red cell, the merozoite matures either into a uninucleate gametocyte--the sexual stage, infectious for Anopheles mosquitoes--or, over 48 to 72 hours, into an erythrocyticstage schizont containing 10 to 36 merozoites. Rupture of the schizont releases these merozoites, which infect other red cells. If a vector mosquito ingests gametocytes, the gametocytes develop in the mosquito gut to gametes, which undergo fertilization and mature in 2 to 3 weeks to sporozoites.

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