Question

Describe the different steps in the sexual mode of reproduction in the life cycle of a malarial parasite from the time of its initiation till where it is completed and ready to start a fresh cycle.

Hint:

The sexual reproduction phase of Plasmodium occurs in mosquitoes, making them the definitive hosts of the parasite.

Answer 1

Gametocyte ingestion: A mosquito consumes male and female gametocytes during its blood meal.

Fertilization: Gametocytes unite within the mosquito's digestive tract, forming a zygote. 

Zygote development: The zygote transforms into an ookinete, which breaches the gut lining and establishes an oocyst. 

Sporozoite release: Sporozoites are liberated from the oocyst and travel to the mosquito's salivary glands, awaiting transmission to a new host.