Question

How does the cork act as a protective tissue?

Answer 1

Cork acts as a protective tissue in plants. It forms the outermost layer of bark in stems and roots and protects the plant from:

• Mechanical injury: Cushions the plant against physical damage.
• Water loss: Its cells are dead and filled with air, forming a waterproof layer.
• Infections: Prevents entry of bacteria, fungi, and insects.
• Extreme temperatures: Insulates the plant from heat and cold.

Conclusion: Cork provides a tough, protective barrier for plants against physical and environmental stress.