In Basidiomycetes, meiosis will take place in

Options

A. Primary mycelium
B. Secondary mycelium
C. Basidiocarp
D. Basidium

Answer

To solve the question regarding where meiosis takes place in Basidiomycetes, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Basidiomycetes**: Basidiomycetes are a group of fungi that are known for their complex fruiting bodies, called basidiocarps. They are considered the most advanced fungi.

2. **Identify the Structures**: In Basidiomycetes, there are several structures:
- **Basidiocarp**: The fruiting body of the fungus.
- **Basidium**: A club-shaped structure where meiosis occurs.
- **Mycelium**: The network of fungal threads (hyphae) that forms the body of the fungus.

3. **Meiosis in Basidiomycetes**: In Basidiomycetes, meiosis specifically occurs in the basidium. The basidium is responsible for producing basidiospores, which are formed after meiosis.

4. **Eliminate Incorrect Options**:
- **Primary Mycelium**: This is the initial stage of mycelial growth and does not undergo meiosis.
- **Secondary Mycelium**: This is formed from the fusion of two primary mycelia but does not directly undergo meiosis.
- **Basidiocarp**: While it is the fruiting body, meiosis does not occur here; it occurs in the basidium.

5. **Conclusion**: Therefore, the correct answer to the question is that meiosis takes place in the **basidium**.

### Final Answer:
Meiosis in Basidiomycetes takes place in the **basidium**.

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