Plant form and function Plant body Further information: Plant morphology , Plant anatomy , and Plant physiology Root and shoot systems in a eudicot The plant body is made up of organs that can be organized into two major organ systems : a root system and a shoot system . [193] The root system anchors the plants into place. The roots themselves absorb water and minerals and store photosynthetic products. The shoot system is composed of stem , leaves , and flowers . The stems hold and orient the leaves to the sun, which allow the leaves to conduct photosynthesis. The flowers are shoots that have been modified for reproduction . Shoots are composed of phytomers , which are functional units that consist of a node carrying one or more leaves, internode, and one or more buds . A plant body has two basic patterns (apical–basal and radial axes) that been establish...