The secondary meristems are usually lateral. They give rise to secondary tissues that constitute secondary growth. The common examples are vascular cambium of the root (derived from conjunctive parenchyma), interfascicular vascular cambium, cork cambium, wound cambium and accessory cambia. The apical meristems are present at the tips of stem, root and their branches. Intercalary meristems are meristematic regions which are derived from the apical meristems and which have been separated from them