Neither plasmogamy and nor karyogamy occurs in

Options

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

Answer

To answer the question "Neither plasmogamy nor karyogamy occurs in," we need to analyze the options provided and understand the reproductive processes involved in different fungal groups.

### Step-by-Step Solution:

1. **Understanding Plasmogamy and Karyogamy**:
- Plasmogamy is the fusion of the cytoplasm of two parent cells.
- Karyogamy is the fusion of their nuclei.
- Both processes are essential for sexual reproduction in fungi.

2. **Analyzing the Options**:
- **Option A: Ascomycetes** - This group undergoes both plasmogamy and karyogamy during their sexual reproduction.
- **Option B: Basidiomycetes** - Similar to Ascomycetes, Basidiomycetes also undergo both plasmogamy and karyogamy.
- **Option C: Deuteromycetes** - Known as imperfect fungi, Deuteromycetes do not have a known sexual stage in their life cycle, meaning they do not undergo plasmogamy or karyogamy.
- **Option D: Phycomycetes** - This group also undergoes both plasmogamy and karyogamy.

3. **Conclusion**:
- The group that does not undergo either plasmogamy or karyogamy is **Deuteromycetes** (Option C).

### Final Answer:
**Option C: Deuteromycetes**