A tree Fern is

Options

A. Adiantum
B. Dryopteris
C. Asplenium
D. Cyathaea.

Answer

**Step-by-Step Solution:**

1. **Understanding Tree Ferns**: Begin by recognizing that tree ferns are a type of fern that has a woody trunk. This distinguishes them from other types of ferns which do not have a woody structure.

2. **Identifying the Group**: Tree ferns belong to the group known as pteridophytes, which are vascular plants. This is important as it helps narrow down the options provided in the question.

3. **Analyzing the Options**:
- **Adiantum**: Known as walking ferns, these do not have a woody trunk and therefore cannot be classified as tree ferns.
- **Dryopteris**: Commonly referred to as wood ferns, these also lack a woody trunk, ruling them out as tree ferns.
- **Asplenium**: Commonly called ferns, they similarly do not possess a woody trunk, so they are not tree ferns.
- **Scythe**: This group is recognized as tree ferns and belongs to the order Cyatheales, which is characterized by having a woody trunk.

4. **Conclusion**: Based on the analysis of the options, the only correct answer that fits the definition of a tree fern is **Scythe**.

**Final Answer**: The correct answer is **Scythe**.

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