Primary growth refers to the increase in length of a plant, primarily occurring at the tips of roots and shoots. This growth is facilitated by the activity of the apical meristem, a region of undifferentiated cells that divide and differentiate into various types of plant tissues. As these cells divide, they push older cells further away, allowing the plant to extend its height and depth. In addition to lengthening, primary growth also contributes to the formation of new leaves and flowers. This process is essential for a plant's ability to capture sunlight and reproduce. Overall, primary growth is crucial for a plant's development and survival in its environment.