what system does a leaf belong to
General Plant Organization | Back to Top. A plant has two organ systems: 1) the shoot system, and 2) the root system. The shoot system is above ground and includes the organs such as leaves, buds, stems, flowers (if the plant has any), and fruits (if the plant has any).The root system includes those parts of the plant below ground, such as the roots, tubers, and rhizomes. Major organ systems of the plant body.uard Cells. To facilitate gas exchange between the inner parts of leaves, stems, and fruits, plants have a series of openings known as stomata (singular stoma). Obviously these openings would allow gas exchange, but at a cost of water loss.