DO PLANTS GROW?
Plants grow from localized areas called meristems.
- discrete regions or groups of cells that possess continued cell
division for the
EXHIBIT TWO TYPES OF GROWTH
a) apical meristem orapex- the growing points located at the tips of stems and roots.
intercalary meristem - the growth
region at the base of grass leaves that causes
corky) tissues called the secondary plant body.
Secondary growth is due to lateral meristems.
lateral meristem - meristematic regions along the sides of stems and roots.
a) vascular cambium orcambium - a sheet-like meristem between the bark and wood
along the sides of woody stems and roots; it gives rise to secondary xylem
(commonly called wood) on the inside and secondary phloem on the outside.
b) cork cambium or phellogen - gives rise to the periderm (commonly called bark).