The correct answer is vacuoles. Concept:Meristematic tissue:It is formed of undifferentiated cells that keep on dividing and produce new cells throughout plant life.It is found in the growing regions of plants such as the tips of roots, shoots, and branches.Explanation:Meristematic tissue is further sub-divided into three types:Apical meristem Growing tips of the root, and stemLateral meristemIn between vascular bundles as cambiumIntercalary meristemAt the base of the internodeCharacteristics of meristematic cells:They are small, undifferentiated, and thin-walled.Cells may be spherical, polygonal, oval, rectangular, etc.The cytoplasm is dense.Vacuoles are absent.The nucleus is prominent and centrally located.