Sirisha saw her mother was placing a piece of ginger in the soil after the use. Identify the reason behind this.

Explanation

**Step-by-Step Solution:**

1. **Observation**: Sirisha noticed her mother placing a piece of ginger in the soil after using it for cooking.

2. **Understanding Ginger**: Ginger is a type of rhizome, which is a modified stem that grows underground. It has the ability to sprout and grow into a new plant.

3. **Vegetative Propagation**: The process of growing a new plant from a part of an existing plant is known as vegetative propagation. Ginger can reproduce this way without the need for seeds.

...