The moving light (positive phototropism) movement toward the light, caused by the growth of plants at the tip end of the seeds are germinated amount will include the creation of hormone Auxin or IAA (indole acetic acid) Xin tip out is on the light side could not be more than being conveying light due to oxidation just outside the light side to side not to get silicone off light will encourage cell division increasing. Therefore, do not be so light, the cell division than which side is light, so the light is no longer made, and causes a bend toward the light and it will always be like this.
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