Explain why xylem transport is unidirectional and phloem transport bi-directional,

Explanation

### Step-by-Step Solution:

1. **Understanding Xylem Transport**:
- Xylem is a type of vascular tissue in plants responsible for the transportation of water and minerals from the roots to the leaves.
- The transport of water in xylem is unidirectional, meaning it only moves in one direction—from the roots upwards to the shoots.

2. **Reasons for Unidirectional Transport in Xylem**:
- **Negative Transpirational Pull**:
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