Select incorrect match

Options

A. Cohesion - mutual attraction between water molecules.
B. Adhesion - attraction of water molecules to polar surfaces
C. Surface Tension - water molecules are attracted to each other in the liquid phase more than to water in thegas phase.
D. Tensile strength- the ability to rise in thin tubes.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks to select the incorrect match related to the properties of water that contribute to the ascent of xylem sap in plants.

2. **Identifying Key Concepts**: The ascent of xylem sap refers to the upward movement of water in plants, primarily driven by transpiration pull. This process relies on certain physical properties of water.

3. **Evaluating Each Option**:
- **Option 1: Cohesion** - This refers to the mutual attraction between water molecules. This is a correct match as cohesion helps in the formation of a continuous water column in the xylem.
- **Option 2: Adhesion** - This is the attraction of water molecules to polar surfaces, such as the walls of xylem vessels. This is also a correct match as adhesion helps water to climb up the xylem walls.
- **Option 3: Surface Tension** - This property arises due to the cohesive forces between water molecules, which allows water to form droplets and resist external forces. This is a correct match as it contributes to the stability of the water column.
- **Option 4: Tensile Strength** - This is the ability of a material to resist a pulling force. The statement provided in the option describes the ability to rise in thin tubes, which is actually known as capillarity, not tensile strength.

4. **Conclusion**: Since option 4 incorrectly defines tensile strength as the ability to rise in thin tubes, it is the incorrect match.

**Final Answer**: The incorrect match is option number 4.

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