The sac fungi belongs to :-

Options

A. Ascomycetes
B. Basidiomycetes
C. Phycomycetes
D. Deuteromycetes

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks to identify the group to which sac fungi belong.

2. **Identifying the Options**: The options provided are:
- A) Ascomycetes
- B) Basidiomycetes
- C) Phycomycetes
- D) Deuteromycetes

3. **Defining Sac Fungi**: Sac fungi are characterized by the formation of a sac-like structure called an ascus, which contains spores.

4. **Analyzing the Options**:
- **Ascomycetes**: This group is known for producing asci, which are the sac-like structures that contain the haploid spores known as ascospores. This directly relates to the definition of sac fungi.
- **Basidiomycetes**: Known as club fungi, they do not form asci but rather produce basidia.
- **Phycomycetes**: Often referred to as algae-like fungi, they do not have the characteristic ascus structure.
- **Deuteromycetes**: Known as imperfect fungi, they do not fit the definition of sac fungi either.

5. **Conclusion**: Based on the definitions and characteristics, sac fungi belong to the group **Ascomycetes**.

### Final Answer:
The sac fungi belong to **Ascomycetes**.

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