What is the role of gibberellin in plant growth?

Gibberellin is a key plant hormone that plays a significant role in promoting various aspects of plant growth and development. Among its functions, one of the most critical is its ability to stimulate stem elongation. This process involves the elongation of cells and the increased growth of internodes, which results in taller plants. Gibberellins facilitate this growth by promoting cell division and expansion. As a result, they are essential for achieving the characteristic height and form of many plants.

In addition to stem elongation, gibberellins are also involved in regulating other developmental processes such as germination and flowering. However, the most direct and well-established role of gibberellins is in promoting growth through stem elongation. Thus, when considering the primary functions of gibberellins, stimulating stem elongation stands out as a vital mechanism that contributes to the overall growth and development of plants.