Mention in brief the three Components of a Periderm.

Explanation

**Step-by-Step Solution:**

1. **Understanding Periderm**: Periderm is a protective tissue that forms during secondary growth in plants, particularly in stems and roots. It replaces the epidermis and provides protection against environmental factors.

**Hint**: Remember that periderm is involved in secondary growth and replaces the outer layer of stems and roots.

2. **Identifying the Components**: The periderm consists of three main components:
- **Phelum**: This is the outermost layer of the periderm, commonly referred to as cork. It is made up of dead cells that have thickened walls due to the deposition of a substance called suberin, which makes them impermeable to water and gases.
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