Cells located in meristematic cells in plants lack vacuoles. However, this contradicts with the fact that plant cells have large vacuoles to store water and keep the plant in an upright position. I would also like to add that meristematic tissues are generally found in roots and stems of plants. Finally, I would like to ask why do meristems lack vacuoles?
Turgor pressure exerted by the vacuole is also essential in supporting plants in an upright position: Wikipedia
Apical mertisem is present at the growing tips of stems and roots and increases the length of the stem and the root. The girth of the stem or root increases due to lateral mertisem (cambium): Science for Class 9 by National Council of Educational Research & Training, page number 69
Cells of meristematic tissue are very active, they have dense cytoplasm, thin cellulose walls and prominent nuclei. They lack vacuoles: Science for Class 9 by National Council of Educational Research & Training, page number 70