Completely closed and globose ascocarp with no special opening is called:

Options

A. Perithecium
B. Apothecium
C. Ascostroma
D. Cleistothecium

Answer

To solve the question regarding the type of ascocarp that is completely closed and globose with no special opening, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Terminology**:
- Ascocarp is the fruiting body of ascomycete fungi.
- The terms "closed," "globose," and "no special opening" are key descriptors of the type of ascocarp.

2. **Identify the Types of Ascocarps**:
- **Perithecium**: A flask-shaped ascocarp with an opening (ostiole).
- **Apothecium**: A cup-shaped ascocarp that is open at the top.
- **Ascostroma**: A type of ascocarp that is more complex and may not fit the description.
- **Clistothecium**: A completely closed, globose ascocarp with no special opening.

3. **Analyze the Options**:
- The question specifies a "completely closed and globose" structure.
- The term "globose" suggests a round shape, which fits the description of Clistothecium.

4. **Conclusion**:
- Based on the definitions and characteristics of the ascocarps, the correct answer is **Clistothecium**.

### Final Answer:
The completely closed and globose ascocarp with no special opening is called **Clistothecium**.

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