How it is decided that the given element is macronutrient or a micronutrient ?

Explanation

To determine whether a given element is classified as a macronutrient or a micronutrient, we follow a specific set of criteria based on the quantitative requirements of the element in plants. Here’s a step-by-step explanation:

### Step-by-Step Solution:

1. **Understanding Macronutrients and Micronutrients**:
- Macronutrients are elements that plants require in larger quantities, while micronutrients are needed in smaller amounts.

2. **Quantitative Requirement**:
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