Properties nutritional water minerals vitamins fiber Preservation Major cultivars Brassica and Brassicaceae Structure and function of stems and leaves. Stems provide support for the above ground parts of the plant. They also house the conduction system.
Leaves are the usual site of photosynthesis in the plant.
See figure 230 ff. Banana stems, e.g., are actually the bases of leaves rolled together. Produce leaves, buds, stems, branches, and roots. Mainly responsible for increase in length. Produce tissues such as wood and bark.