Select the odd one out from the following w.r.t macronutrient.

Options

A. Nitrogen
B. Phosphorus
C. Iron
D. Sulphur

Answer

To solve the question of selecting the odd one out with respect to macronutrients, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Macronutrients and Micronutrients**:
- Macronutrients are nutrients required by plants in larger quantities (greater than 10 millimoles per kilogram of dry matter).
- Micronutrients are required in smaller quantities (less than 10 millimoles per kilogram of dry matter).

2. **Identify the Given Nutrients**:
- The nutrients listed in the question are: Nitrogen, Phosphorus, Sulfur, and Iron.

3. **Classify Each Nutrient**:
- **Nitrogen**: This is classified as a macronutrient.
- **Phosphorus**: This is also classified as a macronutrient.
- **Sulfur**: This is classified as a macronutrient as well.
- **Iron**: This is classified as a micronutrient.

4. **Determine the Odd One Out**:
- Since Nitrogen, Phosphorus, and Sulfur are all macronutrients, while Iron is a micronutrient, Iron is the odd one out.

5. **Conclusion**:
- The odd one out with respect to macronutrients is **Iron**.