Find the correct match :-

Options

A. Aspergillus niger - butyric acid
B. Clostridium butylicum - ethanol
C. Acetobacter aceti - Acetic acid
D. Saccharomyces cerevisiae - citric acid

Answer

To find the correct match between the organisms and the products they produce, we can analyze each option step by step.

### Step-by-Step Solution:

1. **Aspergillus niger**: This organism is known for producing citric acid, not butyric acid. Therefore, it does not match with butyric acid.

2. **Clostridium butylicum**: This bacterium is known for producing butyric acid, not ethanol. Thus, it does not match with ethanol.

3. **Acetobacter**: This genus is known for producing acetic acid through the fermentation of ethanol. Therefore, it correctly matches with acetic acid.

4. **Saccharomyces cerevisiae**: This yeast is widely used in the beverage industry for its ability to ferment sugars into ethanol. Thus, it correctly matches with ethanol.

5. **Butyric acid**: This is a product produced by Clostridium butylicum, but it is not an organism itself.

6. **Citric acid**: This is produced by Aspergillus niger, but again, it is not an organism.

### Conclusion:
The correct matches are:
- **Aspergillus niger** → **Citric acid**
- **Clostridium butylicum** → **Butyric acid**
- **Acetobacter** → **Acetic acid**
- **Saccharomyces cerevisiae** → **Ethanol**

Thus, the correct match from the options given is **Acetobacter** with **Acetic acid**.