The characteristic feature of class basidiomycetes is/are :

Options

A. Clamp connection
B. Cellulosic cell wall
C. Simple septa
D. Zoospores

Answer

To answer the question regarding the characteristic features of the class Basidiomycetes, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Basidiomycetes**:
- Basidiomycetes, also known as club fungi, are a class of fungi characterized by their reproductive structures called basidia, where spores are produced.

2. **Identifying Key Features**:
- One of the notable features of Basidiomycetes is the presence of **clamp connections**. These are specialized structures that help in the distribution of nuclei during cell division.

3. **Evaluating the Options**:
- **Option 1: Clamp Connections** - This is correct. Clamp connections are indeed a characteristic feature of Basidiomycetes.
- **Option 2: Cellulosic Cell Wall** - This is incorrect. The cell wall of true fungi, including Basidiomycetes, is primarily made of chitin, not cellulose.
- **Option 3: Single Septa** - This is also incorrect. Basidiomycetes typically have septate hyphae, which means they have multiple septa (cross-walls) in their hyphal structure.
- **Option 4: Zoospores** - This is incorrect as well. Zoospores are not a characteristic of Basidiomycetes; they are more commonly found in certain aquatic fungi.

4. **Conclusion**:
- The correct characteristic feature of Basidiomycetes is the presence of **clamp connections**.

### Final Answer:
The characteristic feature of class Basidiomycetes is the presence of **clamp connections**.

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