Infective stage of Plasmodium for men is

Options

A. merozoites
B. ookinetes
C. sporozoites
D. none of these

Answer

To determine the infective stage of Plasmodium for humans, let's break down the information step by step:

### Step 1: Understanding Plasmodium
Plasmodium is a genus of parasites known to cause malaria in humans. There are several species of Plasmodium, with Plasmodium falciparum being the most common and deadly.

### Step 2: Transmission of Plasmodium
The transmission of Plasmodium occurs through the bite of an infected female Anopheles mosquito. When the mosquito bites a human, it injects the infective form of the parasite into the bloodstream.

### Step 3: Identifying the Infective Stage
The infective stage of Plasmodium that is injected into humans during a mosquito bite is known as **sporozoites**. These sporozoites travel to the liver, where they multiply and eventually enter the red blood cells.

### Step 4: Lifecycle of Plasmodium
After entering the liver, the sporozoites undergo asexual reproduction and form merozoites, which then infect red blood cells. This process leads to the symptoms of malaria, such as fever and chills, due to the release of toxic substances when the red blood cells burst.

### Step 5: Conclusion
The question asks for the infective stage of Plasmodium for humans. Based on the lifecycle and transmission process, the correct answer is **C: Sporozoites**.

### Final Answer
The infective stage of Plasmodium for humans is **C: Sporozoites**.

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