At which stage plasmodium enter in the body of humans.
Or Which of the following is infected phase of plasmodium?

Options

A. Sporozoites
B. Gametocytes
C. Haemozoin
D. None of these

Explanation

To answer the question, "At which stage does Plasmodium enter the body of humans?" we need to follow these steps:

### Step 1: Understand the life cycle of Plasmodium
Plasmodium is a genus of parasites that cause malaria. Its life cycle involves both a mosquito vector and a human host.

### Step 2: Identify the stages of Plasmodium
The life cycle of Plasmodium includes several stages:
- **Sporozoites**: These are the infectious form that is injected into humans by the bite of an infected female Anopheles mosquito.
- **Merozoites**: These are formed after the sporozoites invade liver cells and multiply.
- **Gametocytes**: These are the sexual forms of the parasite that can be taken up by mosquitoes.

### Step 3: Determine the infectious stage for humans
The infectious stage of Plasmodium that enters the human body is the **sporozoite**. When an infected female Anopheles mosquito bites a human, it injects sporozoites into the bloodstream.

### Step 4: Confirm the answer with options
Given the options:
- A) Sporozoids
- B) Cavitocides
- C) Hemozoin
- D) None of these

The correct answer is **A) Sporozoids**, as this is the stage when Plasmodium enters the human body.

### Conclusion
Thus, the stage at which Plasmodium enters the body of humans is the **sporozoite** stage.

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