Final answer:
New cells form in the meristems as a plant grows.
Step-by-step explanation:
As a plant grows, new cells form in the meristems. Meristems are isolated spots in plants where cell division occurs. These newly produced cells exhibit vacuolar growth, which pushes the meristematic regions further away from the main body of the plant, expanding the total size of the plant. Therefore, meristems play a crucial role in the growth and expansion of plants.