Which of these is not a trace element in plants?

Options

A. Iron
B. Copper
C. Magesium
D. Zinc

Answer

To determine which of the given options is not a trace element in plants, we need to categorize the elements listed: Iron, Copper, Magnesium, and Zinc.

1. **Identify the Categories of Nutrients:**
- Essential nutrients for plants are divided into two categories: macronutrients and micronutrients (also known as trace elements).
- Macronutrients are needed in larger amounts, while micronutrients are required in very small amounts.

2. **List the Elements:**
- The elements provided in the question are:
- Iron
- Copper
- Magnesium
- Zinc

3. **Classify Each Element:**
- **Iron:** This is a micronutrient and is considered a trace element.
- **Copper:** This is also a micronutrient and a trace element.
- **Zinc:** This is another micronutrient and a trace element.
- **Magnesium:** This is classified as a macronutrient, which means it is needed in larger amounts compared to the trace elements.

4. **Conclusion:**
- Since Magnesium is the only element among the options that is not a trace element, the correct answer to the question is **Magnesium**.

**Final Answer:** Magnesium is not a trace element in plants.

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