Chlorosis results from deficiency of

Options

A. Chlorine
B. Sodium
C. Calcium
D. Magnesium

Answer

**Step-by-Step Solution:**

1. **Understanding Chlorosis**: Chlorosis is a condition in plants characterized by yellowing of leaves. It is primarily caused by a deficiency of certain nutrients that are essential for chlorophyll production.

2. **Identifying the Nutrients**: The question presents four options: chlorine, sodium, calcium, and magnesium. We need to determine which of these is directly related to chlorophyll synthesis.

3. **Role of Magnesium**: Magnesium is a crucial element in the formation of chlorophyll, the green pigment responsible for photosynthesis in plants. Without adequate magnesium, chlorophyll production decreases, leading to yellowing of leaves.

4. **Evaluating Other Options**:
- **Chlorine**: While chlorine is important for plant health, it is not directly involved in chlorophyll synthesis.
- **Sodium**: Sodium is not an essential nutrient for most plants and does not play a role in chlorophyll production.
- **Calcium**: Calcium is important for cell wall structure and stability but does not directly affect chlorophyll synthesis.

5. **Conclusion**: Since magnesium is essential for chlorophyll synthesis, a deficiency in magnesium leads to chlorosis. Therefore, the correct answer is magnesium.

**Final Answer**: Chlorosis results from a deficiency of magnesium.

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