The female gametangium of Ascomycotina is called :

Options

A. ascocarp
B. ascogonium
C. cleistothecium
D. perithecium

Explanation

To solve the question "The female gametangium of Ascomycotina is called:", we will analyze the provided options step by step.

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for the name of the female gametangium in Ascomycotina, a group of fungi.

2. **Review the Options**:
- **Option A: Ascocarp**: Ascocarps are the fruiting bodies of Ascomycetes, which produce spores. They are not gametangia.
- **Option B: Ascogonium**: Ascogonium is specifically known as the female gametangium in Ascomycetes. This is the correct answer.
- **Option C: Clistothecium**: Clistothecium refers to a type of fruiting body that also produces spores, not a gametangium.
- **Option D: Perithecium**: Perithecium is another type of fruiting body, typically flask-shaped, that produces spores. It is not a female gametangium.

3. **Identify the Correct Answer**: Based on the definitions and characteristics of each option, **Option B: Ascogonium** is the correct answer as it is the female gametangium of Ascomycotina.

4. **Conclusion**: Therefore, the answer to the question is **Ascogonium**.

### Final Answer:
The female gametangium of Ascomycotina is called **Ascogonium**.

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