Infective stage of Plasmodium in man is:

Options

A. Gametocyte
B. Sporozoite
C. Merozoite
D. Metamerozoite Charkhan

Answer

**Step-by-Step Solution:**

1. **Understanding Plasmodium:**
- Plasmodium is a genus of protozoan parasites that cause malaria in humans. It is essential to know that there are different species of Plasmodium, each responsible for different types of malaria.

2. **Identifying the Infective Stage:**
- The question specifically asks for the infective stage of Plasmodium in humans. To answer this, we need to look at the life cycle of the Plasmodium parasite.

3. **Entry into the Human Body:**
- Plasmodium enters the human body through the bite of an infected female Anopheles mosquito. This mosquito acts as a vector for the transmission of the parasite.

4. **Infective Form:**
- The form of Plasmodium that enters the human body is called **Sporozoite**. This is the infective stage of the parasite in humans.

5. **Life Cycle Progression:**
- Once inside the human body, sporozoites travel to the liver, where they multiply. After this stage, they enter the bloodstream and infect red blood cells (RBCs), leading to the symptoms of malaria.

6. **Conclusion:**
- Therefore, the correct answer to the question "Infective stage of Plasmodium in man is:" is **Sporozoite**.

**Final Answer:** Sporozoite

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