The relationship between osmotic pressure, turgor pressure and wall pressure is represented by

Options

A. TP=OP + WP
B. OP=TP WP
C. WP = TP-OP
D. OP = TP + WP

Answer

To solve the question regarding the relationship between osmotic pressure (OP), turgor pressure (TP), and wall pressure (WP), we can break it down step by step:

### Step 1: Understand the Definitions
- **Osmotic Pressure (OP)**: The pressure required to prevent the flow of water into a solution via osmosis.
- **Turgor Pressure (TP)**: The pressure exerted by the fluid (usually water) inside the cell against the cell wall.
- **Wall Pressure (WP)**: The pressure exerted by the cell wall against the turgor pressure.

### Step 2: Identify the Relationships
From the definitions, we can establish that:
- Turgor pressure (TP) is the result of osmotic pressure (OP) pushing against the cell wall.
- Wall pressure (WP) is the counteracting force against turgor pressure.

### Step 3: Establish Mathematical Relationships
1. **Turgor Pressure and Wall Pressure**:
- Turgor pressure (TP) is equal and opposite to wall pressure (WP). Therefore, we can say:
\[ TP = WP \]

2. **Diffusion Pressure Deficit (DPD)**:
- DPD is defined as the difference between osmotic pressure and turgor pressure:
\[ DPD = OP - TP \]

3. **In Fully Turgid Cells**:
- When a cell is fully turgid (swollen), the turgor pressure equals the osmotic pressure:
\[ TP = OP \]
- In this case, wall pressure (WP) also equals turgor pressure:
\[ WP = TP \]

### Step 4: Combine the Relationships
From the above relationships, we can conclude:
- Since in fully turgid cells, TP = OP and WP = TP, we can derive:
\[ OP = TP = WP \]

### Step 5: Identify the Correct Option
Based on the established relationships, the correct representation of the relationship between osmotic pressure, turgor pressure, and wall pressure is:
\[ OP = TP + WP \]
However, since TP = WP, we can also express it as:
\[ OP = TP \text{ and } OP = WP \]

Thus, the correct answer is:
\[ OP = TP + WP \]

### Final Answer
The relationship between osmotic pressure, turgor pressure, and wall pressure is represented by:
\[ OP = TP + WP \]