Select the mismatched pair.

Options

A. Apothecium - Peziza
B. Ascostroma - Pleospora
C. Perithecium - Claviceps
D. Cleistothecium - Neurospora

Answer

To solve the question of selecting the mismatched pair, we will analyze each option provided in the context of their definitions and associations.

### Step-by-Step Solution:

1. **Identify the first pair: Apothecium and Peziza**
- **Definition**: Apothecium is a type of fruiting body that is cup-shaped and is found in certain fungi, particularly in the Ascomycetes group.
- **Association**: Peziza is indeed a genus of fungi that produces apothecia.
- **Conclusion**: This pair is matched correctly.

2. **Identify the second pair: Ascostroma and Pleospora**
- **Definition**: Ascostroma refers to a type of structure in which ascospores are produced internally.
- **Association**: Pleospora is a genus of fungi that belongs to the Ascomycetes and can produce ascostroma.
- **Conclusion**: This pair is also matched correctly.

3. **Identify the third pair: Perithecium and Claviceps**
- **Definition**: Perithecium is a flask-shaped fruiting body that contains ascospores.
- **Association**: Claviceps is a genus of fungi that produces perithecia.
- **Conclusion**: This pair is matched correctly.

4. **Identify the fourth pair: Neurospora and its fruiting body**
- **Definition**: Neurospora is a genus of fungi that typically produces a different type of fruiting body (not a perithecium).
- **Association**: Neurospora does not form perithecia; instead, it produces a different structure called an ascocarp.
- **Conclusion**: This pair is mismatched.

### Final Answer:
The mismatched pair is **Neurospora and its fruiting body**.

---