Ascomycetes members are known as

Options

A. Club fungi
B. Sac fungi
C. Fungi imperfecti
D. Fission fungi

Answer

### Step-by-Step Solution:

1. **Identify the Group**: Ascomycetes is a class of fungi within the kingdom Fungi.

2. **Understand the Characteristics**: Members of Ascomycetes are characterized by the presence of a special structure called "asci," which are sac-like structures where spores are produced.

3. **Terminology**: The term "sac fungi" is derived from the presence of these asci, as they resemble sacs that contain the spores.

4. **Eliminate Other Options**:
- "Club fungi" refers to Basidiomycetes, which have a different reproductive structure.
- "Fungi imperfecta" refers to fungi that do not have a known sexual reproduction phase, which is not specific to Ascomycetes.
- "Fusion fungi" is not a recognized term in the classification of fungi.

5. **Conclusion**: Based on the characteristics and the terminology, members of Ascomycetes are known as "sac fungi."

### Final Answer:
Ascomycetes members are known as **sac fungi**.

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