Young plants were grown beneath an opaque platform. Light reached the plants mainly from the open edge of the platform.
Researchers placed equal numbers of similar plants into two groups. The results after five days are shown in the table.
| Group | Treatment | Mean shoot angle towards the open edge in ° | Mean light intensity at the leaves in lux |
|---|---|---|---|
| A | shoots allowed to grow freely | 36 | 4800 |
| B | shoots supported in a vertical position | 3 | 2100 |
Using the data, explain how the growth response of the shoots in group A could benefit these plants.
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.