A potted plant is laid on its side in a dark cupboard for two days.
Which statement describes and explains what happens to the shoot?
The shoot curves upwards, because more auxin collects on the lower side of the shoot
The shoot curves downwards, because more auxin collects on the lower side of the shoot
The shoot curves upwards, because more auxin collects on the upper side of the shoot
The shoot grows straight, because there is no light to cause an unequal spread of auxin
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59 exam-style questions on AQA GCSE Biology 5.4 Plant hormones, covering 5.4.1 Control and coordination and 5.4.2 Use of plant hormones (HT only). Each one has a worked solution and a mark scheme showing where the marks go.