Terpene
Gibberellic acid is a type of plant hormone known as a terpene. Terpenes are a large and diverse class of organic compounds produced by a variety of plants, particularly conifers and flowering plants. They are often responsible for the characteristic scents of plants and have a wide range of biological functions.

Role of Gibberellic Acid
Gibberellic acid plays a crucial role in plant growth and development. It is involved in various processes such as seed germination, stem elongation, leaf expansion, and flowering. This hormone promotes cell division and cell elongation, leading to overall plant growth and development.

Chemical Structure
Gibberellic acid is a diterpenoid compound with a complex structure. It is derived from the terpene precursor geranylgeranyl pyrophosphate. The unique structure of gibberellic acid allows it to interact with specific receptors in plant cells, triggering various physiological responses.

Applications
Due to its role in promoting plant growth, gibberellic acid is widely used in agriculture. It is used to increase crop yields, improve fruit quality, and promote flowering in ornamental plants. Additionally, gibberellic acid can be applied to induce seed germination and break seed dormancy in certain plant species.
In conclusion, gibberellic acid is a terpene compound that plays a crucial role in regulating plant growth and development. Its unique chemical structure and biological functions make it an important plant hormone with various applications in agriculture and horticulture.