Write short note on :Life cycle of Plasmodium.

1.	Write short note on :Life cycle of Plasmodium.
Answer» 1. Anopheles Female mosquito which is a carrier carries sporozoites. When it bites the human, these sporozoites enter human circulation. 2. Sporozoites undergo asexual reproduction through fission or schizogony in the liver cells or erythrocytes of the human. 3. It forms merozoites. The cells formed within erythrocytes function as gametocytes. They undergo gamogony. 4. Upon biting such person, the gametocytes enter into female Anopheles, fertilization occurs in its gut. 5. Diploid zygote transforms into oocyst. Oocyst forms large number of haploid sporozoites through meiosis (sporogony). 6. Sporozoites migrate to salivary glands and are ready to infect new human host. 7. Again Sporozoite → Merozoite → Trophozoite → Schizont sequence is carried on for plasmodial stages in human body. 8. The sexual life cycle of Plasmodium occurs in mosquito body which acts as a vector. While its asexual phase takes place in human body.

Answer»

1. Anopheles Female mosquito which is a carrier carries sporozoites. When it bites the human, these sporozoites enter human circulation.

2. Sporozoites undergo asexual reproduction through fission or schizogony in the liver cells or erythrocytes of the human.

3. It forms merozoites. The cells formed within erythrocytes function as gametocytes. They undergo gamogony.

4. Upon biting such person, the gametocytes enter into female Anopheles, fertilization occurs in its gut.

5. Diploid zygote transforms into oocyst. Oocyst forms large number of haploid sporozoites through meiosis (sporogony).

6. Sporozoites migrate to salivary glands and are ready to infect new human host.

7. Again Sporozoite → Merozoite → Trophozoite → Schizont sequence is carried on for plasmodial stages in human body.

8. The sexual life cycle of Plasmodium occurs in mosquito body which acts as a vector. While its asexual phase takes place in human body.

Discussion