plant cell A cell which is a plant structure (PO:0009011). Applies to cells that are living or dead at maturity (e.g., fiber cell or tracheid) and includes any external encapsulating structures (if present) such as the plasma membrane and the plant-type cell wall. Definition of cell GO:0005623: "The basic structural and functional unit of all organisms. Includes the plasma membrane and any external encapsulating structures such as the cell wall and cell envelope". GO:0009505. Definition of plant-type cell wall (GO:0009505): A more or less rigid structure lying outside the cell membrane of a cell and composed of cellulose and pectin and other organic and inorganic substances, synonym; exact: cellulose and pectin-containing cell wall. GO:0005623 PO:0009002 PO_GIT:56 c&#233lula vegetal (Spanish, exact) cell (broad) plant_anatomy 植物細胞 (Japanese, exact) portion of plant tissue plant organ plant structure cardinal organ part collective plant organ structure