Usually elongated, differential thickness of cell wall in corners 3. C. Sclerenchyma 1. Usually dead at maturity when they start to function 2. Secondary wall laid down containing lignin. Support and protection of non-growing organs 4.
Complex tissues involve more than one cell type.
A. Vascular tissues 1. Two types that occur together 3. Both xylem and phloem may contain other cells besides conducting cells. B. Protective tissues 1. Describe the structure and formation of a new cell wall in plants.