Guttation in plants results from

Options

A. root pressure
B. transpirational pull
C. pressure flow in phloem
D. condensation of atmospheric water

Answer

**Step-by-Step Solution:**

1. **Definition of Guttation**: Guttation is the process by which water is secreted from the tips or edges of leaves in plants. This typically occurs during the night or early morning when the humidity is high and transpiration is low.

2. **Role of Root Pressure**: Guttation is primarily driven by a phenomenon known as root pressure. When there is an abundance of water in the soil, the roots absorb more water than the plant can use. This excess water creates a positive pressure in the roots.

3. **Mechanism of Guttation**: The root pressure forces water upward through the plant's xylem vessels. When the pressure builds up sufficiently, it pushes the excess water out through specialized structures called hydathodes located at the leaf tips or margins.

4. **Conclusion**: Therefore, the correct answer to the question "Guttation in plants results from" is root pressure.

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