How does the tip of the plant bend towards the light?

1.	How does the tip of the plant bend towards the light?
Answer» Because auxin hormone which help cells to grow longer diffuses on the shadier side and this makes plant to bend towards light When there is sunlight on one side of the plant ,then auxin membrane in that part began to break off and accumulate on the shaddier part cause that to grow more and hence the other side gets bend towards the sunlight...

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