The pressure developed in tracheary elements of xylem due to metabolic activity of roots 1s called:

Options

A. OP
B. TP
C. Root pressure
D. Atmospheric pressure

Answer

To solve the question regarding the pressure developed in tracheary elements of xylem due to the metabolic activity of roots, we can break it down step by step:

### Step-by-Step Solution:

1. **Understanding the Terms**:
- The question asks about a specific type of pressure that develops in the xylem due to root activity.
- The options provided are osmotic pressure (OP), turgor pressure (TP), root pressure, and atmospheric pressure.

2. **Analyzing the Options**:
- **Osmotic Pressure (OP)**: This is the pressure that stops the movement of a pure solvent into a solution through osmosis. It is related to the concentration of solutes but does not directly relate to the pressure in xylem.
- **Turgor Pressure (TP)**: This is the pressure exerted by the fluid inside the cell against the cell wall. While important for plant structure, it is not specifically related to the pressure in xylem due to root activity.
- **Root Pressure**: This is the pressure that develops in the roots of plants due to the metabolic activities of living cells. It is responsible for pushing water and nutrients upward through the xylem.
- **Atmospheric Pressure**: This is the pressure exerted by the weight of the atmosphere. It does not pertain to the internal pressure in the plant's xylem.

3. **Identifying the Correct Answer**:
- Among the options, root pressure is the only one that specifically describes the pressure developed in the xylem due to the metabolic activities of roots. It is a key mechanism in the movement of water within plants.

4. **Conclusion**:
- Therefore, the correct answer to the question is **Root Pressure**.

### Final Answer:
The pressure developed in tracheary elements of xylem due to metabolic activity of roots is called **Root Pressure**.

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