Life cycle of malarial parasite, Biology

Life cycle of malarial parasite

When the mosquito sucks the blood, gametocytes enter its digestive system.
They migrate into the walls of the digestive system and undergo further development.
Macrogametocyte develops into macrogamete, which is equivalent to unfertilised ovum.
Microgametocyte divides further and gives rise to microgametes, which are equivalent to sperms.
These two gametes fuse to give rise to zygote.
The zygote migrates to the outer layers of the wall.
It grows in size and divides to produce large number of sporozoits. The sporozoits migrate to the salivary glands of mosquito and reside in the tubules.
When the infected mosquito bites, the sporozoits enter the human body along with the saliva of mosquito. This part of life cycle is the sexual cycle because it undergoes sexual reproduction in the body of mosquito.

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