`SO_(2)` pollution affects the cell organelle

Options

A. Mitochondria
B. Chloroplasts
C. Golgi bodies
D. Vacuoles

Answer

### Step-by-Step Solution:

1. **Understanding SO₂ Pollution**:
- Sulfur dioxide (SO₂) is a gas that contributes to air pollution when present in excessive amounts.

2. **Formation of Acid Rain**:
- SO₂ reacts with moisture in the air to form sulfuric acid, leading to acid rain, which is harmful to the environment.

3. **Impact on Photosynthesis**:
- SO₂ pollution disrupts the photosynthetic mechanism in plants. Photosynthesis is primarily carried out in the chloroplasts.

4. **Stomatal Opening and Water Loss**:
- SO₂ promotes the opening of stomata, which are small pores on the leaves that facilitate gas exchange and transpiration.
- Increased stomatal opening leads to excessive water loss in plants, further disrupting the photosynthetic process.

5. **Identifying the Affected Organelle**:
- Among the cell organelles listed (mitochondria, chloroplasts, Golgi bodies, vacuoles), chloroplasts are directly involved in photosynthesis and are therefore the most affected by SO₂ pollution.

6. **Conclusion**:
- The correct answer to the question is that SO₂ pollution affects the **chloroplasts**.

### Final Answer:
- **Chloroplasts** (Option 2)