Question

Sporogony of Plasmodium occurs in

• A. Hepatocytes of a man
• B. RBC of a man
• C. The lumen of stomach wall of a man
• D. The stomach wall of mosquito

Answer 1

The correct option is D The stomach wall of mosquito

The life cycle of the Plasmodium has schizogony in human liver, schizogony in human blood, gametogony in mosquito stomach, sporogony on the stomach wall of mosquito. The encysted zygote is called as an oocyst or sporont. Each oocyst now enters a phase of asexual multiplication known as sporogony. As the oocyst matures, it increases in diameter and meiotic and mitotic divisions follow to form a large number of haploid sporozoites. When fully mature, the sporocyst ruptures, releasing the sporozoites in the body cavity of the mosquito. Large numbers of sporozoites are present in the fluid surrounding the stomach. They penetrate and enter the salivary glands and wait for the mosquito to bite man and release them in human blood. The mosquito at this stage is capable of transmitting infection to man.

Thus, the correct answer is option D.