Which is a walking fern which produces new plants when its leaf tips touch soil

Options

A. Adiantum
B. Pteridium
C. Pteris
D. Marsilea.

Answer

**Step-by-Step Solution:**

1. **Identify the Question:** The question asks for a specific type of fern known as a "walking fern" that produces new plants when its leaf tips touch the soil.

2. **Understand the Term "Walking Fern":** The term "walking fern" refers to a fern that can propagate vegetatively. This means that new plants can grow from parts of the parent plant, specifically from the leaf tips.

3. **Review the Options Provided:**
- Option 1: Adiantum
- Option 2: Pteridium
- Option 3: Terris
- Option 4: Marseillia

4. **Analyze Each Option:**
- **Adiantum:** This is known as a walking fern. It propagates by producing adventitious buds at the leaf tips, which can grow into new plants when they touch the soil.
- **Pteridium:** This is not a walking fern and does not propagate in the same way.
- **Terris:** This is also not a walking fern and does not exhibit the same vegetative propagation.
- **Marseillia:** Similar to the others, this does not produce new plants in the manner described.

5. **Conclusion:** Based on the analysis, the correct answer is **Adiantum**, specifically **Adiantum caudatum**, which is the species known for this type of propagation.

**Final Answer:** The walking fern that produces new plants when its leaf tips touch the soil is **Adiantum (Adiantum caudatum)**.

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