A researcher applies a treatment that changes auxin transport in a vertical shoot. The shoot receives light equally from all directions.
The researcher measures cells in the growing region of the shoot.
| Side of shoot | Auxin concentration in ng per g fresh mass | Mean cell length at the start in μm | Mean cell length at the end in μm |
|---|---|---|---|
| left | 36 | 90 | 135 |
| right | 15 | 90 | 108 |
Explain how the results can be used to predict the direction in which the shoot will curve.
105 exam-style questions on Edexcel GCSE Biology 6.3 Plant hormones, covering 6.3.1 Plant hormones and tropisms and 6.3.2 Commercial uses of plant hormones. Each one has a worked solution and a mark scheme showing where the marks go.