Plant that is all roots

Options

A. Pothos
B. Wollfia
C. Saccharum
D. Podostemon

Answer

To determine which plant is characterized as being "all roots," we will analyze the given options: Pothos, Wolffia saccarum, and Podostemon.

### Step-by-Step Solution:

1. **Analyze Pothos**:
- Pothos is a common houseplant known for its climbing ability and heart-shaped leaves.
- It has a stem, leaves, and roots.
- When the lower leaves are removed, the plant can sprout new roots, but it still has a significant stem and leaves.
- **Conclusion**: Pothos is not the plant that is all roots.

2. **Analyze Wolffia saccarum**:
- Wolffia is known as the smallest flowering plant and is part of the duckweed family.
- It is often referred to as "rootless duckweed" because it lacks true roots.
- **Conclusion**: While it has no roots, it does not fit the description of being "all roots."

3. **Analyze Secharum**:
- Secharum, commonly known as sugarcane, belongs to the grass family.
- It is a tall plant with a significant stem and is cultivated for its sugar content.
- **Conclusion**: Secharum is not a plant that is all roots.

4. **Analyze Podostemon**:
- Podostemon is an aquatic plant belonging to the family Podostemaceae.
- It is characterized by its thread-like roots that attach to rocks in aquatic environments.
- The structure of Podostemon is primarily composed of roots, which gives it the appearance of being "all roots."
- **Conclusion**: Podostemon is the plant that is all roots.

### Final Answer:
The plant that is all roots is **Podostemon**.

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