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6. What are the functions of auxins, gibberellins and abscisic acid?7. i Why do nutrition fos I. |
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Answer» Function of Gibberellins. Gibberellins aregrowth hormonesthat stimulatecellelongation and cause plants to grow taller. Gibberellins also have a role in other plant processes, such asstemelongation, germination, flowering, andfruitripening Auxinspromote stem elongation, inhibit growth of lateral buds (maintains apical dominance). They are produced in the stem, buds, and root tips. Example: Indole Acetic Acid (IA). Auxin is a plant hormone produced in the stem tip that promotes cell elongation Abscisic acid owes its names to its role in the abscission of plant leaves. In preparation for winter, ABA is produced in terminal buds. This slows plantgrowthand directs leaf primordia to develop scales to protect the dormant buds during the cold season |
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