Vegetative propagation in Pistia/Water Hyacinth occurs by

Options

A. Sucker
B. Runner
C. Offset
D. Stolon.

Answer

### Step-by-Step Solution:

1. **Understanding Vegetative Propagation**: Vegetative propagation is a form of asexual reproduction in plants where new individuals arise from vegetative parts of the parent plant, such as stems, roots, or leaves.

2. **Identifying the Plant**: The question refers to Pistia, commonly known as water hyacinth. It is important to know the specific methods of vegetative propagation used by this plant.

3. **Exploring the Options**:
- **A. Sucker**: This refers to a shoot that arises from the base of a plant or from its roots. It is not the primary method used by water hyacinth.
- **B. Runner**: This is a horizontal stem that grows along the ground and can produce new plants at nodes. While some plants use runners, it is not the main method for water hyacinth.
- **C. Offset**: This is a short, horizontal stem that produces new plants at the end. Water hyacinth reproduces by offsets, which are daughter plants that can detach from the parent.
- **D. Stolon**: Similar to runners, stolons are horizontal stems that grow above ground and can produce new plants. However, this term is less specific to water hyacinth.

4. **Conclusion**: Given that water hyacinth primarily reproduces through offsets, which are daughter plants attached to the parent plant, the correct answer is **C. Offset**.

### Final Answer:
The vegetative propagation in Pistia (water hyacinth) occurs by **C. Offset**.

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