Select the incorrect match.

Options

A. Disease - Malaria , Causative organisms - A protozoan , Insect - Anopheles
B. Disease - Chikungunya, Causative organism - A bacteria, Insect - Culex
C. Disease - Filariasis , Causative organism - An annelid , Insect - Culex
D. Disease - Dengue, Causative organism - A virus, Insect - Aedes

Answer

To solve the question of selecting the incorrect match between diseases and their causative organisms or insects, we will analyze each option step by step.

### Step-by-Step Solution:

1. **Option A: Malaria**
- **Causative Organism:** Plasmodium vivax (a protozoan)
- **Transmitting Insect:** Female Anopheles mosquito
- **Analysis:** This is a correct match. Malaria is indeed caused by the protozoan Plasmodium vivax and transmitted by Anopheles mosquitoes.

2. **Option B: Chikungunya**
- **Causative Organism:** Chikungunya virus
- **Transmitting Insect:** Aedes mosquito (not Culex)
- **Analysis:** This is an incorrect match. Chikungunya is caused by a virus, and it is transmitted by Aedes mosquitoes, not Culex mosquitoes.

3. **Option C: Filariasis**
- **Causative Organism:** Wuchereria bancrofti (a roundworm)
- **Transmitting Insects:** Various mosquitoes including Anopheles, Culex, and Aedes
- **Analysis:** This is a correct match. Filariasis is caused by the roundworm Wuchereria bancrofti and can be transmitted by several types of mosquitoes.

4. **Option D: Dengue**
- **Causative Organism:** Dengue virus (DEN1, DEN2, DEN3, DEN4)
- **Transmitting Insect:** Aedes mosquito
- **Analysis:** This is a correct match. Dengue is caused by the dengue virus and transmitted by Aedes mosquitoes.

### Conclusion:
The incorrect match is **Option B: Chikungunya**, as it incorrectly states the transmitting insect as Culex instead of Aedes.

### Final Answer:
**Option B is the incorrect match.**

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