Dolipore septum occurs is

Options

A. Zygomycetes
B. Basidionycetes
C. Ascomycetes
D. Deuteromycetes

Answer

### Step-by-Step Solution:

1. **Understanding Dolipore Septum**:
- The Dolipore septum is a specialized type of septum found in certain fungi. It is characterized by a barrel-shaped structure that helps in the separation of cells in the fungal hyphae.

2. **Identifying the Options**:
- The question provides four options related to different phyla of fungi:
- Option 1: Zygomycetes
- Option 2: Basidiomycetes
- Option 3: Ascomycetes
- Option 4: Deuteromycetes

3. **Analyzing Each Option**:
- **Zygomycetes**: This group does not have Dolipore septa; they typically have simple septa or are coenocytic (aseptate).
- **Basidiomycetes**: This group is known for having Dolipore septa, which are distinct and characteristic of this class.
- **Ascomycetes**: While they have septa, they do not have Dolipore septa.
- **Deuteromycetes**: This group is also known for lacking true sexual reproduction and does not have Dolipore septa.

4. **Conclusion**:
- Based on the analysis, the Dolipore septum is specifically found in Basidiomycetes. Therefore, the correct answer to the question is **Option 2: Basidiomycetes**.