A scientist applied a chemical that prevents cell division to one region of each seedling. The chemical did not affect photosynthesis or the increase in size of cells that had already formed.
The table shows the mean increase in length after 5 days.
| Region treated with chemical | Mean increase in shoot length in mm | Mean increase in root length in mm |
|---|---|---|
| No chemical applied | 28 | 34 |
| Shoot tip | 4 | 32 |
| Middle of stem | 27 | 33 |
| Root tip | 26 | 5 |
| Middle of root | 27 | 32 |
Use the results to explain what they show about the location and function of meristem tissue.
Predict how applying the chemical to the root tip would affect the number of new epidermal cells produced in the root. Explain your answer.
74 exam-style questions on AQA GCSE Biology 2.3 Plant tissues, organs and systems, covering 2.3.1 Plant tissues and 2.3.2 Plant organ system. Each one has a worked solution and a mark scheme showing where the marks go.