A shoot is lit from one side only. Where does auxin build up, and what effect does it have there?
On the lit side, where it increases cell elongation
On the lit side, where it decreases cell elongation
On the shaded side, where it decreases cell elongation
On the shaded side, where it increases cell elongation
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.