Which is not directly connected with ascent fo sap?

Options

A. Cohesion theory
B. Root Pressure
C. Apoplast-symplast
D. Capillarity

Answer

To determine which option is not directly connected with the ascent of sap in plants, we need to analyze each option provided in the question.

### Step-by-Step Solution:

1. **Understanding Ascent of Sap**:
- The ascent of sap refers to the upward movement of water and minerals from the roots to the leaves through the xylem vessels. This process is essential for plant hydration and nutrient distribution.

2. **Analyzing the Options**:
- **Cohesion Theory**: This theory explains that water molecules are attracted to each other (cohesion), forming a continuous column of water in the xylem. This is directly related to the ascent of sap.
- **Root Pressure**: This is the pressure generated in the roots when water enters through osmosis, pushing water upward. Root pressure is also directly connected to the ascent of sap.
- **Apoplast and Symplast Pathways**: These pathways describe how water enters the root. The apoplast pathway involves movement through cell walls and intercellular spaces, while the symplast pathway involves movement through the cytoplasm of cells. However, these pathways are primarily concerned with water uptake, not the upward movement of sap.
- **Capillarity**: This phenomenon helps maintain the continuity of the water column in the xylem, allowing water to rise. Capillarity is also directly related to the ascent of sap.

3. **Identifying the Correct Answer**:
- Among the options, the **apoplast and symplast pathways** are not directly involved in the ascent of sap; they are more about how water enters the plant. Therefore, this option is the correct answer to the question.

### Conclusion:
The option that is not directly connected with the ascent of sap is **apoplast and symplast**.

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