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Question
Describe briefly the three physical properties of water which helps in ascent of water in xylem.
Solution
Following are the three physical properties of water that help in the ascent of water in the xylem.
- Cohesion: It is the ability of water molecules to stick to each other.
- Adhesion: It is the ability of water molecules to stick to a surface.
- Surface Tension: The property of any liquid that tends to occupy the smallest possible surface area is called surface tension. Water makes a continuous column of water in the xylem vessels by adhesion cohesion and surface tension. Transpiration pull pulls this water as a column.
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