In shoots, higher IAA on the shaded side promotes cell elongation, causing bending towards light during phototropism.
In phototropism, higher IAA concentration on the shaded side of shoots promotes cell elongation, causing the shoot to bend towards the light.
| Front | Phototrophism, Shoots and IAA |
|---|---|
| Back | IAA concentration increases on the shaded side, cells elongate and shoot bends towards the light |
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