The sporozoites that cause infection, when a female Anopheles mosquito bites a person, are formed in

Options

A. liver of the person
B. RBCs of mosquito
C. salivary glands of mosquito
D. intestine of mosquito.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks where the sporozoites, which are responsible for causing infection when a female Anopheles mosquito bites a person, are formed.

2. **Identifying the Life Cycle**: The sporozoites are a stage in the life cycle of the Plasmodium parasite, which causes malaria. Understanding the life cycle of Plasmodium is crucial to answering the question.

3. **Role of the Female Anopheles Mosquito**: The female Anopheles mosquito is the vector for malaria. It is important to note that the sporozoites are not formed in the human host but in the mosquito.

4. **Location of Sporozoite Formation**: The formation of sporozoites occurs in the digestive system of the mosquito. Specifically, they are produced in the mosquito's intestine after the mosquito has ingested infected blood.

5. **Movement to Salivary Glands**: After the sporozoites are formed in the intestine, they migrate to the salivary glands of the mosquito. This is where they are stored until the mosquito bites a human, allowing the sporozoites to enter the human bloodstream.

6. **Evaluating the Options**:
- **Option A**: Liver of the person - Incorrect, as sporozoites do not form in the human liver; they enter the liver after infection.
- **Option B**: RBCs of mosquitoes - Incorrect, as the RBCs of mosquitoes do not play a role in the formation of sporozoites.
- **Option C**: Salivary glands of the mosquito - Incorrect, as sporozoites are stored here but not formed.
- **Option D**: Intestine of the mosquito - Correct, as this is where sporozoites are formed.

7. **Conclusion**: The correct answer is **Option D: Intestine of Mosquito**.

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