[问答题]
The diagram represents mz fl4 o2a/ pq8:s).dyi;g h;v:2rzddjg e*zda stem tip and4 s,hcn )k 3nbf;+ecpc the position of the Sun.
1.On the diagram above, draw an arrow to indicate the direction of movement of auxin.
2.（1）State the term used to describe the directional growth of a plant in response to light.
（2）Outline how this process affects growth in the stem tip.
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