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 Question**: The question asks for the name of a specific type of ascocarp that is completely closed, globose in shape, and lacks any special openings.

2. **Identify the Options**: The options provided are:
- Option 1: Parathecium
- Option 2: Apothecium
- Option 3: Eschostroma
- Option 4: Clistothecium

3. **Evaluate Each Option**:
- **Option 1: Parathecium**: This is a flask-shaped fruiting body that has a pore, so it does not fit the description of being completely closed.
- **Option 2: Apothecium**: This is a cup-shaped fruiting body that is wide open, which also does not match the criteria of being closed.
- **Option 3: Eschostroma**: In this type, asci develop within the stroma, and it does not refer to a completely closed ascocarp.
- **Option 4: Clistothecium**: This option describes a completely closed and globose ascocarp, which fits the description given in the question.

4. **Conclusion**: Based on the evaluation of the options, the correct answer is **Clistothecium** (Option 4), as it is the only type of ascocarp that is completely closed and globose with no special openings.

### Final Answer:
The correct answer is **Clistothecium**.

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