A vascular plant consists of two organ systems: the shoot system and the root system. The shoot system includes the aboveground vegetative portions (stems and leaves) and reproductive parts (flowers and fruits). The root system supports the plant and is usually underground. A plant is composed of two main types of tissue: meristematic tissue and permanent tissue. Meristematic tissue consists of actively dividing cells found in root and shoot tips.
As growth occurs, meristematic tissue differentiates into permanent tissue, which is categorized as either simple or complex. Simple tissues are made up of similar cell types; examples include dermal tissue and ground tissue. Dermal tissue provides the outer covering of the plant. Ground tissue is responsible for photosynthesis; it also supports vascular tissue and may store water and sugars. Complex tissues are made up of different cell types. Vascular tissue, for example, is made up of xylem and phloem cells.
meristematic tissue located at the tips of stems and roots; enables a plant to extend in length
protective plant tissue covering the outermost part of the plant; controls gas exchange
plant tissue involved in photosynthesis; provides support, and stores water and sugars
meristematic tissue located at nodes and the bases of leaf blades; found only in monocots
meristematic tissue that enables a plant to increase in thickness or girth
tissue containing cells that constantly divide; contributes to plant growth
plant region of continuous growth
plant tissue composed of cells that are no longer actively dividing
belowground portion of the plant that supports the plant and absorbs water and minerals
aboveground portion of the plant; consists of non-reproductive plant parts, such as leaves and stems, and reproductive parts, such as flowers and fruits
strands of stem tissue made up of xylem and phloem
strands of root tissue made up of xylem and phloem
tissue made up of xylem and phloem that transports food and water throughout the plant