Which organelle is absent in the large nucleus of meristematic tissues?

Meristematic tissues are composed of small, thin-walled cells with a large nucleus and a small or absent vacuole. These cells are actively dividing and undergoing mitosis, which requires a large amount of genetic material in the form of a prominent nucleus. However, vacuoles, which are responsible for storing materials and maintaining cell turgor pressure, are typically absent in meristematic cells.