Main role of minor elements is to act as

Options

A. Constituent of hormones
B. Binder of cell structure
C. Cofactor of enzymes
D. Constituent of amino acids

Answer

**Step-by-Step Solution:**

1. **Understanding Mineral Elements**:
- Mineral elements in plants are categorized into two groups: macronutrients and micronutrients (or minor elements).
- Macronutrients are required in large amounts, while micronutrients are needed in smaller quantities.

2. **Role of Micronutrients**:
- Micronutrients play crucial roles in various physiological processes within plants.
- They are essential for building plant structures and are involved in processes like photosynthesis.

3. **Enzyme Functionality**:
- Enzymes are biological catalysts that speed up chemical reactions in plants.
- Many enzymes require additional non-protein molecules to function effectively, known as cofactors.

4. **Identifying the Main Role of Minor Elements**:
- Among the options given:
- A) Constituent of hormones
- B) Binder of cell structure
- C) Co-factor of an enzyme
- D) Constituent of amino acids
- The role of minor elements aligns most closely with option C, as they often act as cofactors for enzymes.

5. **Conclusion**:
- Therefore, the main role of minor elements is to act as co-factors of enzymes.

**Final Answer**: The main role of minor elements is to act as co-factors of enzymes (Option C).

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