A region of cell division in a plant is

Areas within the plant that are capable of growth (cell division) are called meristems.Primary growth occurs only at the shoot and root tips in areas called apical meristems. Primary growth is responsible for elongating the plant. In areas that contain only primary growth, stem thickness increases by cell enlargement, not by the production of new cells.Lateral meristemsproduce new cells that make the stems and roots thicker. This type of growth is called secondary growth. Secondary growth occurs only during the second and subsequent years and only in woody species.