Element involved in stomatal regulation is

Options

A. Zinc
B. Magnesium
C. Potassium
D. Iron

Answer

**Step-by-Step Solution:**

1. **Understanding Stomatal Function**: Stomata are small openings on the surface of leaves that facilitate gas exchange and transpiration in plants. They play a crucial role in allowing carbon dioxide to enter for photosynthesis and releasing oxygen.

2. **Identifying Essential Nutrients**: Essential nutrients for plants are categorized into macronutrients and micronutrients. Macronutrients are needed in larger quantities, while micronutrients are required in smaller amounts.

3. **Listing Relevant Elements**: The question provides four elements: Zinc, Magnesium, Potassium, and Iron. We need to identify which of these is specifically involved in the regulation of stomata.

4. **Role of Potassium**: Among the elements listed, Potassium is known to play a significant role in stomatal regulation. It helps in the opening and closing of stomata by affecting the turgor pressure of guard cells.

5. **Conclusion**: Based on the information, the element involved in stomatal regulation is **Potassium**.

**Final Answer**: Potassium

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