Plant from which root system is taken during grafting is called ________.

Explanation

**Step-by-Step Solution:**

1. **Understanding Grafting**: Grafting is a horticultural technique where a part of one plant (the scion) is attached to the root system of another plant.

2. **Identifying the Components**: In grafting, there are two main components:
- The upper part of the plant that is grafted, known as the **scion**.
- The lower part, which is the root system, known as the **rootstock**.

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