Water is pulled upward through the xylem against gravity because of…………………. between water molecules and ……………………………. of water molecules to the hydrophilic walls of narrow xylem channels

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question is asking about the forces responsible for the upward movement of water through the xylem against gravity.

2. **Identifying the Key Concepts**: The two main concepts involved in this process are:
- Cohesion: This refers to the attraction between water molecules themselves.
- Adhesion: This refers to the attraction between water molecules and the walls of the xylem vessels.

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