what is the role of auxins?
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Auxins promote stem elongation, inhibit growth of lateral buds (maintains apical dominance). ... Auxin is a plant hormone produced in the stem tip that promotes cell elongation. Auxin moves to the darker side of the plant, causing the cells there to grow larger than corresponding cells on the lighter side of the plant........
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Auxins:When a plant detect light,auxin hormone is synthesised at the shoot tip,help the cells to grow longer. When light is coming from one side of plant,auxin diffuse towards shady side of shoot. This concentration of auxin stimulate the cells to grow longer on the side of shoot which is away from light.♥
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