Plasmogamy, karyogamy and meiosis are observed during sexual reproduction in

Options

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

Answer

To answer the question regarding where plasmogamy, karyogamy, and meiosis are observed during sexual reproduction, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Terms**:
- **Plasmogamy**: This is the fusion of the cytoplasm of two parent cells.
- **Karyogamy**: This is the fusion of the nuclei of two parent cells.
- **Meiosis**: This is a type of cell division that reduces the chromosome number by half, resulting in the formation of gametes.

2. **Identifying the Organisms**:
- The options provided are phycomycetes, ascomycetes, basidiomycetes, and deodoromycetes.
- All these groups belong to the kingdom Fungi.

3. **Analyzing Each Group**:
- **Phycomycetes**: Typically exhibit sexual reproduction involving plasmogamy and karyogamy, but meiosis may not occur in all species.
- **Ascomycetes**: Involves plasmogamy and karyogamy, but meiosis occurs later in the life cycle.
- **Basidiomycetes**: Similar to ascomycetes, they undergo plasmogamy and karyogamy, followed by meiosis.
- **Deodoromycetes**: This group is known for having all three processes (plasmogamy, karyogamy, and meiosis) occur simultaneously during sexual reproduction.

4. **Conclusion**:
- Based on the analysis, the correct answer to the question is **deodoromycetes**, as they exhibit plasmogamy, karyogamy, and meiosis simultaneously during sexual reproduction.

### Final Answer:
Plasmogamy, karyogamy, and meiosis are observed during sexual reproduction in **deodoromycetes**.