Exoerythrocytic phase of life cycle in malarial parasite occurs in

Options

A. liver of man
B. reticulo-endothelium of man
C. brain of man
D. stomach of mosquito

Answer

To solve the question regarding the exoerythrocytic phase of the life cycle in the malarial parasite, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Life Cycle of the Malarial Parasite**:
- The malarial parasite, primarily Plasmodium species, has a complex life cycle that involves both human and mosquito hosts.

2. **Identifying the Exoerythrocytic Phase**:
- The exoerythrocytic phase refers to the stage in the life cycle of the parasite that occurs outside of red blood cells (RBCs).

3. **Entry of the Parasite into the Human Body**:
- The malaria parasite enters the human body through the bite of an infected female Anopheles mosquito in the form of sporozoites.

4. **Migration to the Liver**:
- After entering the bloodstream, the sporozoites travel to the liver, where they undergo asexual reproduction. This phase is crucial as it allows the parasite to multiply before entering the bloodstream and infecting red blood cells.

5. **Conclusion**:
- Given the options provided in the question (liver of man, reticuloendothelium of man, brain of man, stomach of mosquito), the exoerythrocytic phase occurs in the **liver of man**.

### Final Answer:
The exoerythrocytic phase of the life cycle in the malarial parasite occurs in the **liver of man**.

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