Question

Describe life cycle of malarial parasite.

Answer 1

Answer:

Malarial parasite life cycle occurs in two hosts one is human and another one is vector mosquito.

Female anopheles mosquito is the carrier of the malarial parasite.

Malarial parasite life cycle involved in three stages. The first two stages are in humans the last one is in vectors or guts of mosquito.

Female mosquito bites the human plasmodium parasite enters the red blood cells in human, sporozoites are divided by asexually in the liver cells.

Then the matured schizonts are ruptured and release the merozoites.

Female Anopheles mosquito life cycle starts with an egg, larva, pupa, and last final stage is adult. It carries malaria disease to humans. This is the life cycle of the malarial parasite.

Answer 2

Life cycle of malarial parasite:

• Malarial parasite is one of life-threatening parasites. It has the genus name Plasmodium and there are several species like vivax, falciparum, ovale, malaria, etc.
• All these species are known to cause different malaria types, but the life cycle is more or less same.
• The infective stage entering in human body is sporozoite stage of parasite, which then directly infect hepatic cells to go through a mini-cycle of schizonts, trophozoites and finally, break through hepatic cells as merozoites.
• These merozoites again infect different other liver cells and RBCs to multiply in number, which then changes into micro and mega gametocytes.
• These are picked up by mosquitoes into their stomachs where they fertilize to form the zygote, ookinetes and come to salivary glands, forming sporozoite again.