What is present on the surface of the leaves which helps the plant prevent loss of water but is absent in roots ?

Explanation

**Step-by-Step Solution:**

1. **Understand the Question**: The question asks what structure is present on the surface of leaves that helps prevent water loss but is absent in roots.

2. **Identify the Structure**: The structure that is typically found on the surface of leaves is the cuticle.

3. **Function of the Cuticle**: The cuticle is a waxy layer that covers the epidermis of leaves. Its primary function is to reduce water loss through evaporation.

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