Which of the following is a group of micronutrients for plants?

Options

A. Fe, Mn, Cu, Mo, Zn
B. Fe, Mn, Cu, O, C
C. Cu, B, Cl, Fe, Ca
D. Ca, Mg, Fe

Answer

To solve the question "Which of the following is a group of micronutrients for plants?", we can follow these steps:

### Step-by-Step Solution:

1. **Understand Nutrient Categories**:
- Nutrients for plants are categorized into two main groups: macronutrients and micronutrients.
- Macronutrients are required in larger amounts, while micronutrients are needed in minute amounts.

2. **Identify Macronutrients**:
- Common macronutrients include nitrogen, phosphorus, potassium, calcium, magnesium, and sulfur.

3. **Identify Micronutrients**:
- Micronutrients include elements such as manganese, iron, boron, molybdenum, copper, zinc, and chlorine.

4. **Evaluate the Options**:
- **Option A**: Iron, manganese, copper, molybdenum, and zinc.
- All of these are micronutrients.
- **Option B**: Iron, manganese, copper, oxygen, and carbon.
- Oxygen and carbon are basic elements, not micronutrients.
- **Option C**: Copper, boron, chlorine, iron, and calcium.
- Calcium is a macronutrient, making this option incorrect.
- **Option D**: Calcium, magnesium, and iron.
- Calcium and magnesium are both macronutrients, so this option is also incorrect.

5. **Conclusion**:
- The only option that lists only micronutrients is **Option A**: Iron, manganese, copper, molybdenum, and zinc.

### Final Answer:
The correct answer is **Option A**: Iron, manganese, copper, molybdenum, and zinc.

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