In eusporangiate ferns, the sporangia develop from

Options

A. Group of cell initials
B. Single initial
C. 1-4 spores
D. Few to large number of spores.

Answer

To answer the question "In eusporangiate ferns, the sporangia develop from?", we will follow these steps:

### Step-by-Step Solution:

1. **Understanding Sporangia**:
- Sporangia are structures where spores are produced. In ferns, these sporangia can be found aggregated in clusters called sori.

2. **Types of Ferns**:
- There are two main types of ferns based on their sporangia development: eusporangiate ferns and leptosporangiate ferns.

3. **Eusporangiate Ferns**:
- In eusporangiate ferns, the sporangia arise from multiple epidermal cells, which are referred to as cell initials.

4. **Comparison with Leptosporangiate Ferns**:
- In contrast, leptosporangiate ferns develop their sporangia from a single initial cell. This distinction is crucial for understanding the development process in different fern types.

5. **Analyzing the Options**:
- Option 1: "Group of initial cells" - This is correct as eusporangiate ferns develop sporangia from multiple epidermal cells.
- Option 2: "Single initial" - This is incorrect as it pertains to leptosporangiate ferns.
- Option 3: "1-4 spores" - This is incorrect because sporangia produce many spores, typically 64.
- Option 4: "Few-large number of spores" - This is also incorrect as sporangia do not develop from spores.

6. **Conclusion**:
- The correct answer is **Option 1: Group of initial cells**.