Mycelial bacteria are :-

Options

A. Eubacteria
B. Actinomycetes
C. Cyanobacteria
D. Fungi

Answer

**Step-by-Step Solution:**

1. **Understanding Mycelial Bacteria**: Mycelial bacteria refer to a group of bacteria that have a filamentous structure similar to fungi. They are often associated with soil and play a role in decomposition.

2. **Evaluating the Options**:
- **Option 1: U bacteria**: This option is incorrect. U bacteria (or eubacteria) do not have a mycelial structure. They typically have a single circular chromosome and lack a nuclear membrane.
- **Option 2: Actinomycetes**: This option is correct. Actinomycetes are a group of bacteria that exhibit filamentous growth and are often referred to as mycelial bacteria. They are known for their role in soil ecology and antibiotic production.
- **Option 3: Cyanobacteria**: This option is incorrect. Cyanobacteria are photosynthetic bacteria that do not have a mycelial structure.
- **Option 4: Other options**: The remaining options do not pertain to mycelial bacteria and are therefore incorrect.

3. **Conclusion**: Based on the evaluation of the options, the correct answer to the question "Mycelial bacteria are:" is **Actinomycetes**.

**Final Answer**: Mycelial bacteria are Actinomycetes.

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