Culex and Anopheles show similarity in that

Options

A. Females of both transmit diseases
B. Larvae float in water
C. Larvae lie horizontally, floating parallel to surface of water
D. All the above.

Answer

To answer the question "Culex and Anopheles show similarity in that," we will analyze the provided options step by step.

### Step-by-Step Solution:

1. **Identify the Organisms**:
- Culex and Anopheles are both genera of mosquitoes. They belong to the same family, Culicidae.

2. **Examine the Options**:
- **Option A**: Females of both transmit diseases.
- **Option B**: Larvae float in water.
- **Option C**: Larvae lie horizontally floating parallel to the surface of water.
- **Option D**: All of the above.

3. **Analyze Option A**:
- Female Anopheles mosquitoes are known to transmit malaria.
- Female Culex mosquitoes can transmit diseases such as filariasis and Japanese encephalitis.
- **Conclusion**: This option is correct.

4. **Analyze Option B**:
- Both Anopheles and Culex larvae are aquatic, meaning they live in water.
- **Conclusion**: This option is also correct.

5. **Analyze Option C**:
- The larvae of both Anopheles and Culex lie horizontally and float parallel to the surface of the water.
- **Conclusion**: This option is correct as well.

6. **Final Conclusion**:
- Since all three options (A, B, and C) are correct, the answer must be **Option D: All of the above**.

### Final Answer:
The correct answer is **All of the above**.

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