If cell (A) with OP =5 and TP=4 is surrounded by cells with OP =3 and TP=1, what will be the direction of water movement ?

Options

A. From cell A to other cells
B. From other cells to cell A
C. Water will not move
D. Water will move in both the directions in equal amounts

Answer

To determine the direction of water movement between cell A and its surrounding cells, we need to calculate the diffusion pressure deficit (DPD) for both cell A and the surrounding cells.

### Step-by-Step Solution:

1. **Understand the Definitions**:
- **Osmotic Pressure (OP)**: The pressure required to prevent the flow of water into a solution by osmosis.
- **Turgor Pressure (TP)**: The pressure exerted by the fluid (water) inside the cell against the cell wall.
- **Diffusion Pressure Deficit (DPD)**: This is calculated using the formula:
\[ \text{DPD} = \text{OP} - \text{TP} \]
- Water moves from areas of lower DPD to areas of higher DPD.

2. **Calculate DPD for Cell A**:
- Given:
- OP of Cell A = 5
- TP of Cell A = 4
- Using the formula:
\[ \text{DPD of Cell A} = 5 - 4 = 1 \]

3. **Calculate DPD for Surrounding Cells**:
- Given:
- OP of Surrounding Cells = 3
- TP of Surrounding Cells = 1
- Using the formula:
\[ \text{DPD of Surrounding Cells} = 3 - 1 = 2 \]

4. **Compare DPD Values**:
- DPD of Cell A = 1
- DPD of Surrounding Cells = 2
- Since the DPD of the surrounding cells (2) is greater than that of Cell A (1), water will move from Cell A to the surrounding cells.

5. **Conclusion**:
- The direction of water movement will be from Cell A to the surrounding cells because water moves from areas of lower DPD to areas of higher DPD.

### Final Answer:
Water will move from cell A to the surrounding cells.

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