Guttation occurs in well watered herbaceous plants of well drained soils during

Options

A. Evening
B. Morning
C. Day
D. Noon.

Answer

**Step-by-Step Solution:**

1. **Understanding Guttation**: Guttation is the process by which plants exude water droplets from their leaf margins. This occurs primarily in herbaceous plants that are well-watered.

2. **Conditions for Guttation**: Guttation typically occurs when the soil is well-drained and has high moisture levels. This is essential for the roots to absorb sufficient water.

3. **Role of Root Pressure**: During the night, when transpiration (the loss of water vapor from plant leaves) is minimal or absent, water accumulates in the roots due to high soil moisture. This accumulation leads to increased root pressure.

4. **Timing of Guttation**: The water pressure built up in the roots during the night causes the plant to exude water droplets in the morning when the conditions are still favorable for guttation.

5. **Conclusion**: Therefore, guttation occurs in well-watered herbaceous plants of well-drained soils during the morning.

**Final Answer**: Morning

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