Question

The infective state of malarial parasite Plasmodium that enters human body is

• A. Merozoite
• B. Sporozoite
• C. Trophozoite
• D. Minuta form

Answer 1

The correct option is B Sporozoite

• When the mosquito bites humans it ingests blood cells containing gametocytes.
• The mosquito digests the blood cells, releasing the male and female gametes, which fuse together and burrow into the mosquito’s gut wall, where they mature inside oocysts.
• After 8-15 days (depending on the species) the oocysts burst and sporozoites are released into the body cavity of the mosquito.
• From there, they travel to the salivary glands. when the mosquito bites these infective sporozoite enters the blood of the humans.
• Hence sporozoites are the infective stages of the malaria parasite is found in salivary glands of the mosquitoes.
• So, option B is correct here.