What is the importance of cork to the tree?

Cork is crucial to a tree as it serves as a protective layer that safeguards the underlying tissues from physical damage, pests, and diseases. It also plays a role in reducing water loss by providing insulation and minimizing evaporation. Additionally, the cork layer helps regulate gas exchange through lenticels, which are small openings that allow the tree to breathe. Overall, cork contributes significantly to a tree's survival and health.