Mention the exact function of:
Hydathodes.

Explanation

**Step-by-Step Text Solution:**

1. **Definition of Hydathodes**: Hydathodes are specialized structures found in the leaves of some plants, particularly in angiosperms (flowering plants). They are often located at the margins of leaves.

2. **Function of Hydathodes**: The primary function of hydathodes is to facilitate the process of guttation. Guttation is the exudation of water droplets from the leaf margins, which occurs when the plant is unable to transpire effectively.

3. **Circumstances for Guttation**: Hydathodes release water when transpiration is suppressed. This can happen under conditions of high humidity or when the soil moisture is abundant, leading to a buildup of water pressure in the plant.

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