Dana Bashâs Career, Salary, and Net Worth. After graduation, she worked as an assistant journalist and covered much news. Dana describes her initial days as very hard times but she never got bored of it. Due to the low salary in New York, she had to share a room with John King, her coworker who later turned to her spouse.
1 The root system is below ground and includes roots as well as modified stem structures such as tubers and rhizomes.  The functions of the root system include anchorage, absorption, storage, transport, and production of certain hormones.
As similar cells work together to perform a specific function, they form tissues. A tissue system consists of one or more tissues organized into a functional unit connecting the organs of a plant. Each plant organ (roots, stems and leaves) has dermal, vascular and ground tissues.Plant tissues classified as simple tissues are composed of only one cell type and complex tissues are composed of two or more cell types.s a complex tissue, it is composed of four cell types: vessel elements, tracheids, parenchyma cells and fibers. Vessel elements, non-living, barrel-like cells, and tracheids, non-living, tapered cells, are the actual water-conducting cells of xylem tissue.