The female mosquito is the vector for which of the following diseases?

Options

A. Typhoid and Polio
B. Plague and Rabies
C. Common cold and Ringworm
D. Filariasis and Malaria

Answer

To determine which diseases are transmitted by female mosquitoes, we can analyze the provided options step by step.

### Step 1: Analyze the Options
We have the following options:
1. Typhoid and Polio
2. Plague and Rabies
3. Common Cold and Ringworm
4. Filariasis and Malaria

### Step 2: Evaluate Each Option
- **Option 1: Typhoid and Polio**
- **Typhoid**: Caused by the bacterium *Salmonella typhi*. It is not transmitted by mosquitoes.
- **Polio**: A viral infection that spreads through contaminated water and food, not by mosquitoes.
- **Conclusion**: Incorrect option.

- **Option 2: Plague and Rabies**
- **Plague**: Caused by the bacterium *Yersinia pestis*, transmitted by fleas, not mosquitoes.
- **Rabies**: A viral infection that is primarily transmitted through bites from infected animals, not mosquitoes.
- **Conclusion**: Incorrect option.

- **Option 3: Common Cold and Ringworm**
- **Common Cold**: A viral infection caused by various viruses, not transmitted by mosquitoes.
- **Ringworm**: A fungal infection, also not transmitted by mosquitoes.
- **Conclusion**: Incorrect option.

- **Option 4: Filariasis and Malaria**
- **Filariasis**: A parasitic disease caused by filarial worms, transmitted by female mosquitoes (primarily *Culex* species).
- **Malaria**: Caused by the Plasmodium parasite, transmitted by female *Anopheles* mosquitoes.
- **Conclusion**: Correct option.

### Final Answer
The female mosquito is the vector for **filariasis and malaria**.

---