Here are some major plant hormones and their functions: Auxins: Primarily involved in cell elongation, root formation, fruit development, and phototropism* (bending towards light). They are synthesized in young leaves and developing seeds. Gibberellins (GAs): Promote stem elongation, seed germination, flowering, and fruit development*. They are important for breaking dormancy in seeds and buds. Cytokinins: Stimulate cell division (cytokinesis), cell differentiation, and delay senescence* (aging) in leaves. They often work in conjunction with auxins. Abscisic Acid (ABA): Acts as an inhibitor. It promotes dormancy in seeds and buds, induces stomatal closure in response to water stress, and plays a role in leaf abscission* (shedding). Ethylene: A gaseous hormone that promotes fruit ripening, flower senescence, and leaf abscission. It also plays a role in triple response* in seedlings (shortening, thickening, and horizontal growth) under stress. Last free one today — make it count tomorrow, or type /upgrade for unlimited.