Which one of the following statements is wrong ?

Options

A. Cyanobacteria are also called blue-green algae
B. Golden algae are also called desmids
C. Eubacteria are also called false bacteria
D. Phycomycetes are also called algal fungi

Answer

To solve the question "Which one of the following statements is wrong?", we will analyze each of the given options one by one.

### Step-by-Step Solution:

1. **Analyze Option 1: Cyanobacteria are known as blue-green algae.**
- Cyanobacteria are indeed often referred to as blue-green algae due to their color and photosynthetic capabilities. This statement is **correct**.

2. **Analyze Option 2: Golden algae are known as diatoms.**
- Golden algae are not diatoms; they belong to a different group of protists. Diatoms are a specific type of algae characterized by their silica cell walls. This statement is **incorrect**.

3. **Analyze Option 3: Eubacteria are known as true bacteria.**
- Eubacteria are indeed referred to as true bacteria, distinguishing them from archaebacteria. This statement is **correct**.

4. **Analyze Option 4: Phycomycetes is algal fungi because of its green color.**
- Phycomycetes are a group of fungi, but they are not classified as algal fungi solely based on color. They are not considered algae. This statement is **misleading** but not outright wrong.

### Conclusion:
Based on the analysis, the statement that is wrong is **Option 2: Golden algae are known as diatoms**.

### Final Answer:
The wrong statement is **Option 2**.

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