Meristematic cells lack vacuoles because they are very active and need more space for cytoplasm and organelles involved in cell division and growth. The characteristics of these cells include having a dense cytoplasm, thin cellulose walls, and prominent nuclei.
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Intercalary meristem can be found near the node, and it is typically seen in some plants.
The lateral meristem, commonly known as the cambium, is responsible for increasing the girth of the stem or root.
The apical meristem is located at the growing tips of stems and roots, and its primary function is to increase the length of the stem and the root.
Plants are adapted for a sedentary existence, while animals are adapted for active locomotion, contributing to differences in organ system design.