Zinc is a

Options

A. tracer element
B. trace element
C. macronutrient
D. monomineral nutrient

Answer

**Step-by-Step Solution:**

1. **Understanding Nutrient Categories**: Nutrients are categorized into macronutrients and micronutrients based on the quantity required by plants. Macronutrients are needed in larger amounts, while micronutrients are required in smaller quantities.

2. **Defining Micronutrients**: Micronutrients are essential elements that plants need in trace amounts for various physiological functions. They play crucial roles in processes such as enzyme function, photosynthesis, and overall plant health.

3. **Identifying Zinc's Role**: Zinc is recognized as an essential micronutrient for plants. It is involved in several important functions, including enzyme activation, protein synthesis, and regulation of plant growth.

4. **Classifying Zinc**: Since Zinc is required in small amounts, it falls under the category of micronutrients. Micronutrients are often referred to as trace elements due to the minimal quantities needed.

5. **Selecting the Correct Option**: Given the options provided:
- Option A: Tracer element (not a standard term in plant nutrition)
- Option B: Trace element (correct, as Zinc is a micronutrient)
- Option C: Macronutrient (incorrect, as Zinc is not required in large amounts)
- Option D: Monomineral nutrient (not a standard classification)

The correct answer is **Option B: Trace element**.

**Final Answer**: Zinc is a trace element (Option B).

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