Wednesday, August 29, 2012

Plant Surface Tissue

Plant surface tissue forms the protective outer covering or skin of the plant body. Living epidermal cells are the main surface tissue of roots, stems, and leaves. Sometimes the epidermis secretes a waxy, water resistant cuticle which protects the plant from water-loss and injury. Frequently the epidermis produces hairlike structures, some which secrete sticky substances that protect the plant against attack by insects.