how does phototropism occur in plants?
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The movement of plant or other organism in response to light is called as phototropism. The movement can be either towards the light or away from it. Stem grows in direction of the sunlight (positively phototropic) and roots grows away from it (negatively phototropic). The growth is controlled by plant hormone, auxin.
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Phototropism is the growth of an organism in response to a light stimulus. ... The cells on the plant that are farthest from the light have a chemical called auxin that reacts when phototropism occurs. This causes the plantto have elongated cells on the furthest side from the light.
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