Fruiting bodies are the basis of classification of fungi but it cannot be observed in the member of

Options

A. Phycomycetes and deuteromycetes
B. Ascomycetes
C. Basidiomycetes
D. Sac fungi and club fungi

Answer

To solve the question regarding which members of fungi do not have observable fruiting bodies, we can analyze the options provided and understand the characteristics of each group.

### Step-by-step Solution:

1. **Understand the Classification of Fungi**: Fungi are classified based on their reproductive structures, particularly their fruiting bodies. These structures are typically visible in sexually reproducing fungi.

2. **Identify the Options**:
- **Option A**: Ficomycetes and Deuteromycetes
- **Option B**: Ascomycetes
- **Option C**: Basidiomycetes
- **Option D**: Sac fungi and Club fungi

3. **Analyze Ficomycetes**:
- Ficomycetes (also known as Chytridiomycetes) are primarily asexual fungi. They reproduce using motile zoospores and non-motile aplanospores. They do not form distinct fruiting bodies.

4. **Analyze Deuteromycetes**:
- Deuteromycetes, often referred to as "Imperfect Fungi," do not have a known sexual reproductive stage. They reproduce asexually through spores or budding. Therefore, they also lack observable fruiting bodies.

5. **Analyze Ascomycetes**:
- Ascomycetes are known for their sac-like structures (asci) where sexual spores are produced. They do have observable fruiting bodies.

6. **Analyze Basidiomycetes**:
- Basidiomycetes, commonly known as club fungi, produce fruiting bodies such as mushrooms. They are characterized by their basidia, where sexual spores are formed.

7. **Conclusion**:
- Based on the analysis, the fungi that do not have observable fruiting bodies are Ficomycetes and Deuteromycetes. Thus, the correct answer is **Option A: Ficomycetes and Deuteromycetes**.

### Final Answer:
**Ficomycetes and Deuteromycetes do not have observable fruiting bodies.**