Question

Asexual life cycle of Plasmodium is completed in-
A. Human body
B. Female Culex mosquito
C. Male Anopheles mosquito
D. Female Anopheles mosquito

Answer 1

Hint:- An infected female mosquito injects sporozoites into the new host during blood feeding. Sporozoites, capable of infecting liver cells, develop into schizonts that rupture and release merozoites.

Complete step-by-step solution:-
Option A is correct. Once the hepatocyte is invaded, the parasite undergoes asexual replication. Exoerythrocytic or pre-erythrocytic schizogony is sometimes referred to as this replicative stage. Schizogony refers to a replicative mechanism in which, without cytoplasmic division, the parasite undergoes several rounds of nuclear division, accompanied by budding or segmentation to form progeny. Following the rupture of the host hepatocyte, the offspring, called merozoites, are released into the circulatory system.
Option B is incorrect. Eggs are deposited on the surface of fresh or stagnant water by adult female Culex mosquitoes. Barrels, horse troughs, ornamental ponds, unmaintained swimming pools, puddles, creeks, ditches, and marshy areas can provide water sources. Eggs are laid by a female Culex mosquito one at a time. The key vectors that transmit the viruses that cause West Nile fever, St. Louis encephalitis, and Japanese encephalitis, as well as viral diseases of birds and horses, are Culex, a wide group of mosquitoes sometimes called common house mosquitoes.
Option C is incorrect. Male Anopheles mosquitoes live in the wild as well as in laboratory conditions for just around one week. Males do not feed on mammalian blood, unlike females. They drink nectar from flowers using their proboscis or feeding tube. This is because, in order to grow eggs, male mosquitoes do not need an extra dose of nutrients, which is a task for women.
Option D is incorrect. Malaria is spread by female mosquitoes from the Anopheles genus to humans. In the parasite life cycle, female mosquitoes take blood meals for egg development, and these blood meals are the connexion between humans and mosquito hosts.
So, the correct answer is Option A.

Note:- With 3.9 billion people at risk, Dengue is prevalent in more than 128 countries. Dengue is mainly caused by Aedes aegypti mosquito. The virus, through the bite of an infected female mosquito, is transmitted to humans.