Which one of the following products is synthesised by fungal and bacterial species both

Options

A. Ethanol
B. Methanol
C. Acetic acid
D. Antibiotics

Answer

To solve the question of which product is synthesized by both fungal and bacterial species, we will analyze the options provided and identify the correct answer step by step.

### Step-by-Step Solution:

1. **Identify the Products**: The question mentions several products, including ethanol, methanol, antibiotics, and acetic acid. We need to determine which of these can be produced by both fungi and bacteria.

2. **Analyze Ethanol and Methanol**:
- Ethanol is primarily produced by yeast, a type of fungus, through fermentation of sugars found in fruits and cereals.
- Methanol is not commonly produced by either fungi or bacteria in significant amounts. Therefore, neither ethanol nor methanol is synthesized by both types of organisms.

3. **Examine Acetic Acid**:
- Acetic acid is produced by the bacteria Acetobacter aceti through the oxidation of ethanol. However, it is not produced by fungal species. Thus, acetic acid is not the correct answer.

4. **Consider Antibiotics**:
- Antibiotics are compounds that can be produced by both fungi and bacteria. For example, penicillin is produced by the fungus Penicillium notatum, while streptomycin and tetracycline are produced by various bacterial species.
- Since antibiotics are synthesized by both fungal and bacterial species, this option fits the criteria given in the question.

5. **Conclusion**: Based on the analysis, the product that is synthesized by both fungal and bacterial species is **antibiotics**.

### Final Answer:
The correct answer is **antibiotics**.

---