A conservation worker takes stem cuttings from a rare native shrub. The worker applies auxin rooting powder to the cut ends of half of the cuttings. All the cuttings are planted in the same type of compost and kept under the same conditions. After several days, the auxin-treated cuttings take up more water from the compost than the untreated cuttings.
Explain why the auxin-treated cuttings take up more water from the compost.
87 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.