Erythrocytic cycle of Plasmodium occurs in

Options

A. Liver
B. Spleen
C. RBC
D. Gut.

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks where the erythrocytic cycle of Plasmodium occurs. The term "erythrocytic" refers to red blood cells (RBCs).

2. **Identifying the Life Cycle of Plasmodium**: Plasmodium, the causative agent of malaria, has a complex life cycle that includes different stages in both humans and mosquitoes.

3. **Stages of the Life Cycle**:
- **Sporozoite Stage**: Plasmodium is introduced into the human body through the bite of a female Anopheles mosquito. The sporozoites are the infectious forms that enter the bloodstream.
- **Pre-Erythrocytic Stage**: After entering the human body, sporozoites travel to the liver where they undergo a phase called pre-erythrocytic schizogony. This stage occurs in liver cells, not in RBCs.
- **Erythrocytic Stage**: Following the liver stage, the parasites enter the erythrocytic stage. This is where the Plasmodium parasites invade the red blood cells (RBCs) and undergo asexual reproduction. The stages in the erythrocytic cycle include trophozoite, signet ring stage, and amoeboid stage.

4. **Conclusion**: The erythrocytic cycle occurs specifically in the red blood cells (RBCs) of humans. Therefore, the correct answer to the question is that the erythrocytic cycle of Plasmodium occurs in the RBCs.

### Final Answer:
The erythrocytic cycle of Plasmodium occurs in the red blood cells (RBCs).

---