High tensile strength and high capillarity in plants is aided by
(A)Cohesion
(B)Adhesion
(c )Transpiratory pull

Options

A. A and B
B. B and C
C. A and C
D. A,B and C

Answer

To solve the question regarding the factors aiding high tensile strength and high capillarity in plants, we will analyze the options provided: Cohesion, Adhesion, and Transpiratory pull.

### Step-by-Step Solution:

1. **Understanding High Tensile Strength and High Capillarity**:
- High tensile strength refers to the ability of water to resist being pulled apart. This is crucial for the upward movement of water in plants.
- High capillarity refers to the ability of water to rise in narrow tubes, which is important for water transport in plant xylem.

2. **Analyzing Cohesion**:
- Cohesion is the mutual attraction between water molecules. This property allows water molecules to stick together, which contributes to high tensile strength. When water is pulled up through the xylem, the cohesive forces between water molecules help maintain a continuous column of water.

3. **Analyzing Adhesion**:
- Adhesion is the attraction of water molecules to other polar surfaces, such as the walls of the xylem vessels. This property helps water to "climb" up the walls of the xylem, contributing to capillarity.

4. **Analyzing Transpiratory Pull**:
- Transpiratory pull is the process by which water is pulled up through the plant due to the loss of water vapor from the leaves during transpiration. While this is a driving force for water movement, it relies on the properties of cohesion and adhesion to be effective.

5. **Conclusion**:
- Both cohesion and adhesion are responsible for providing high tensile strength and high capillarity in plants. Therefore, the correct answer is:
- **(A) Cohesion** and **(B) Adhesion**.

### Final Answer:
The correct options are (A) Cohesion and (B) Adhesion.

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