Neck canal cells in Dryopteris are

Options

A. One with two nuclei
B. Two
C. One with one nucleus
D. Four.

Answer

**Step-by-Step Solution:**

1. **Identify the Organ**: The question asks about neck canal cells in Dryopteris, which is commonly known as wood fern.

2. **Understand the Structure**: The archegonium, which is the female reproductive structure in ferns like Dryopteris, is flask-shaped and has a cylindrical neck.

3. **Examine the Neck Canal**: Within the neck of the archegonium, there is a central canal. This canal is surrounded by neck canal cells.

4. **Count the Neck Canal Cells**: The neck canal consists of four vertical rows of neck canal cells that enclose the canal. However, inside this canal, there is a specific type of cell.

5. **Identify the Specific Cell**: Inside the canal, there is one long neck canal cell that is notable for having two nuclei. This cell does not have a cell wall separating the nuclei, which allows them to appear as one.

6. **Conclusion**: Therefore, the correct answer to the question is that there is one neck canal cell in Dryopteris, and this cell contains two nuclei.

**Final Answer**: The neck canal cells in Dryopteris are 1 with 2 nuclei (Option A).

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