Which of the following stages of plasmodium is correctly depicted in the transmission between female Anopheles mosquito and humans ?

Options

A.
B.
C.
D.

Answer

To solve the question regarding the transmission stages of Plasmodium between female Anopheles mosquitoes and humans, we will analyze each option step by step.

### Step-by-Step Solution:

1. **Understanding the Transmission Process**:
- The transmission of Plasmodium occurs when a female Anopheles mosquito bites a human. During this process, the mosquito injects certain stages of the Plasmodium parasite into the human bloodstream.

2. **Identifying the Stages of Plasmodium**:
- The key stages of Plasmodium involved in transmission are:
- **Sporozoites**: These are the infective forms that are injected into the human host when the mosquito bites.
- **Trophozoites**: These are the active feeding stages of the parasite that develop in the human host.
- **Gametocytes**: These are the sexual forms of the parasite that develop in the human host and are taken up by the mosquito when it feeds.

3. **Analyzing Each Option**:
- **Option 1**: Claims that female Anopheles transmits sporozoites. This is correct because sporozoites are indeed injected into humans during the bite.
- **Option 2**: States that female Anopheles transfers trophozoites. This is incorrect; trophozoites develop in the human body after sporozoites are injected.
- **Option 3**: Suggests that gametocytes are transmitted from humans to female Anopheles. This is partially correct, but it does not mention the initial transmission of sporozoites from the mosquito to the human.
- **Option 4**: Correctly states that sporozoites are transmitted from female Anopheles to humans, and gametocytes are transmitted from humans to female Anopheles. This accurately represents the full cycle of transmission.

4. **Conclusion**:
- The correct answer is **Option 4**, as it accurately depicts the stages of Plasmodium involved in the transmission between female Anopheles mosquitoes and humans.