All elements are remobilized except

Options

A. P
B. N
C. K
D. S

Answer

To solve the question "All elements are remobilized except," we will analyze each of the given options to determine which element is not remobilized in plants.

### Step-by-Step Solution:

1. **Understanding Remobilization**:
- Remobilization refers to the ability of certain nutrients or elements to be moved from one part of the plant to another, especially from older tissues to younger tissues during periods of growth or stress.

2. **Analyzing the Elements**:
- We have four elements to consider: Phosphorus, Nitrogen, Potassium, and Sulphur.

3. **Phosphorus**:
- Phosphorus is known to be mobile in plants. It can be remobilized from older leaves to younger tissues when needed.

4. **Nitrogen**:
- Nitrogen is also a mobile nutrient. It can be remobilized from senescing leaves to support new growth.

5. **Potassium**:
- Potassium is another element that is remobilized. It can move from older tissues to younger tissues as the plant requires it.

6. **Sulphur**:
- Sulphur, however, is generally considered to be less mobile in plants. It is often found in structural components of the cell and does not translocate easily within the plant.

7. **Conclusion**:
- Based on the analysis, the element that is not remobilized is Sulphur. Therefore, the correct answer is option 4: Sulphur.

### Final Answer:
- The element that is not remobilized is **Sulphur** (Option 4).