Guttation occurs due to

Options

A. Turgor pressure
B. Root pressure
C. Osmotic pressure
D. DPD

Answer

**Step-by-Step Solution:**

1. **Understanding Guttation:**
- Guttation is the process where plants lose water in the form of liquid droplets, typically observed at the edges or tips of leaves.

2. **Identifying the Cause of Guttation:**
- The primary cause of guttation is the pressure created in the plant's roots, known as root pressure.

3. **Role of Root Pressure:**
- Root pressure occurs when ions are absorbed from the soil into the vascular tissue of the roots. This absorption of ions leads to an increase in solute concentration in the roots, causing water to move into the roots through osmosis.

4. **Pressure Build-up:**
- As water enters the roots, it creates a positive pressure in the xylem vessels. This pressure forces water upwards through the plant and can lead to the exudation of water droplets through specialized structures called hydathodes.

5. **Conditions Favoring Guttation:**
- Guttation is most commonly observed during the night or early morning when the rate of evaporation is low, allowing excess water to accumulate and be expelled as droplets.

6. **Conclusion:**
- Therefore, the correct answer to the question "Guttation occurs due to" is **Root Pressure**.

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