AP BIOLOGY

Detailed explanation-1: -Generally speaking, gibberellins work as growth accelerators, causing cell stretching and cell division. They ensure that seeds germinate and that flowers form in plants that need long days.

Detailed explanation-2: -Gibberellins (GAs) affect flowering in a species-dependent manner: in long-day and biennial plants they promote flowering, whereas in other plants, including fruit trees, they inhibit it.

Detailed explanation-3: -Florigen is known as the flowering hormone which is responsible for controlling the flowering in plants. The production of florigen is done in the leaves of the plants. It acts in the shoot of the plant and the growing tips of the apical meristem. It is considered graft transmissible and works between the species.

Detailed explanation-4: -Gibberellins are plant growth regulators that facilitate cell elongation, help the plants to grow taller. They also play major roles in germination, elongation of the stem, fruit ripening and flowering.