**Question:** Stages seen in peripheral smear of falciparum malaria -

A. Early trophozoite stage
B. Schizont stage
C. Late trophozoite stage
D. Dormant hypnozoite stage

**Core Concept:**
Malaria is a parasitic infection caused by Plasmodium species, primarily affecting humans. In the case of falciparum malaria, the parasite undergoes various life cycle stages in the host's bloodstream, which can be observed microscopically in a peripheral blood smear.

**Why the Correct Answer is Right:**
In falciparum malaria, the parasite undergoes four main life cycle stages:
1. **Early trophozoite stage:** This stage is characterized by the presence of young parasites (trophozoites) within the red blood cells (RBCs). During this stage, the parasite multiplies rapidly, leading to destruction of the RBCs and hemolysis.
2. **Schizont stage:** Following the early trophozoite stage, the schizont stage occurs. In this stage, the trophozoites differentiate into merozoites, which then rupture the RBCs. This results in hemolysis, symptoms, and complications associated with malaria, such as fever, chills, and anemia.
3. **Late trophozoite stage:** This stage is characterized by the presence of fully mature trophozoites within the RBCs. The number of infected RBCs increases, leading to severe anemia and other complications.
4. **Dormant hypnozoite stage:** Occasionally, some merozoites differentiate into hypnozoites within the liver cells (hepatocytes). These hypnozoites can later reactivate, leading to a relapse of the disease. However, this option is not considered in the peripheral smear examination, as the hypnozoites are not visible in the peripheral blood smear.

**Why Each Wrong Answer is Incorrect:**
A. **Early schizont stage:** This stage is part of the schizont stage mentioned above, where the trophozoites differentiate into merozoites, leading to hemolysis and clinical symptoms.

B. **Mature trophozoite stage:** This stage is a subset of the late trophozoite stage mentioned above, where the number of infected RBCs increases, causing severe anemia and other complications.

C. **Late schizont stage:** This stage is also a subset of the schizont stage, characterized by the presence of fully mature schizonts within the RBCs, leading to severe anemia and complications.

The correct answer focuses on the specific stages in the peripheral blood smear and does not mention the hypnozoite stage, which occurs in the liver and is not visible in the peripheral blood smear.