In a fully turgid cell the values of DPD, OP and TP should be :(

Options

A. DPD = 10 atm., OP = 15 atm. , TP = 5 atm
B. DPD = 5 atm., OP = 12 atm., TP = 7 atm
C. DPD = 2 atm., OP = 7 atm., TP = 5 atm.
D. DPD = 0 atm., OP = 15 atm., TP = 15 atm.

Answer

To solve the question about the values of DPD (Diffusion Pressure Deficit), OP (Osmotic Pressure), and TP (Turgor Pressure) in a fully turgid cell, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Definitions**:
- **DPD (Diffusion Pressure Deficit)**: It is the difference between osmotic pressure (OP) and turgor pressure (TP).
- **OP (Osmotic Pressure)**: It is the pressure required to prevent the flow of water into the cell.
- **TP (Turgor Pressure)**: It is the pressure exerted by the fluid inside the cell against the cell wall.

2. **Establish the Relationship**:
- The relationship between DPD, OP, and TP can be expressed with the formula:
\[ \text{DPD} = \text{OP} - \text{TP} \]

3. **Conditions of a Fully Turgid Cell**:
- A fully turgid cell is one that is swollen with water, typically found in a hypotonic solution.
- In this state, the osmotic pressure (OP) and turgor pressure (TP) are equal because the cell is filled to its maximum capacity with water.

4. **Setting the Values**:
- Since OP = TP in a fully turgid cell, we can denote both as 'x'.
- Therefore, substituting into the DPD formula:
\[ \text{DPD} = \text{OP} - \text{TP} = x - x = 0 \]

5. **Conclusion**:
- In a fully turgid cell:
- DPD = 0
- OP = TP (let's say both are equal to 'x', where x is a positive value)
- Thus, the values can be summarized as:
- DPD = 0
- OP = TP (both are equal, e.g., 15 atm)

### Final Values:
- DPD = 0
- OP = 15 atm
- TP = 15 atm