Which of the following organism affect the lymphatic vessels in human and is spread by bite of female Culex mosquito?

Options

A. Ascaris
B. Microsporum
C. Yersinia pestis
D. malaria

Answer

To solve the question, "Which of the following organisms affect the lymphatic vessels in humans and is spread by the bite of the female Culex mosquito?", we will analyze each option provided.

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for an organism that affects the lymphatic vessels in humans and is transmitted by the bite of a female Culex mosquito.

2. **Identify the Organisms**: We need to evaluate the options provided to determine which organism fits the criteria.

3. **Evaluate the First Option - Ascaris**:
- Ascaris is a parasitic roundworm that causes ascariasis.
- It primarily affects the intestines, not the lymphatic vessels.
- **Conclusion**: Ascaris does not meet the criteria.

4. **Evaluate the Second Option - Microsporum**:
- Microsporum is a genus of fungi that primarily causes skin infections (dermatomycosis).
- It is not known to affect the lymphatic vessels or be transmitted by mosquitoes.
- **Conclusion**: Microsporum does not meet the criteria.

5. **Evaluate the Third Option - Yersinia Pestis**:
- Yersinia pestis is a bacterium that causes the plague.
- It is transmitted through flea bites, not mosquito bites, and does not affect the lymphatic vessels directly.
- **Conclusion**: Yersinia pestis does not meet the criteria.

6. **Evaluate the Fourth Option - Malaria**:
- Malaria is caused by protozoa of the genus Plasmodium.
- It is transmitted by the bite of female Anopheles mosquitoes, not Culex mosquitoes.
- **Conclusion**: Malaria does not meet the criteria.

7. **Final Conclusion**: After evaluating all the options, none of them correctly answer the question as stated. The organism that affects the lymphatic vessels and is spread by the bite of a mosquito is actually **Wuchereria bancrofti**, which causes lymphatic filariasis and is transmitted by the bite of female mosquitoes, including Culex species.

### Final Answer:
None of the provided options are correct. The correct organism is Wuchereria bancrofti.