LIKE a husk of a coconut.The cells of this tissue are dead.They are long and narrow as the walls are thickened due to lignin.Often these walls are so thick that there is no internal pace inside the cell.This tissue is present in stems, around vascular bundles, in the veins of leaves, and in the hard covering of seeds and nuts.It provides strength to the plant parts.Collenchyma is a supporting tissue characteristic of the GROWING organs of MANY herbaceous and woody plants, and it is also found in stems and leaves of mature herbaceous plants, including those that are only slightly modified by secondary growth.Xylem and Phloem are the Complex Permanent Plant tissue.Xylem - It is plant tissue that transports FOOD water and other dissolved minerals from roots to other parts of the plant. Phloem - The main function of the phloem is to transport food materials from the leaf to other parts of the plant.Sclereids are extremely variable in SHAPE and are present in various tissues of the plant, such as the periderm, cortex, pith, xylem, and phloem.