A herd of 20 deer moves into a part of a nature reserve where a poisonous shrub grows. The deer have not encountered this species of shrub before.
Cameras record whether each deer eats at least one leaf from the shrub on each of five days. All 20 deer are recorded every day.
| Day | Number that ate leaves | Number that did not eat leaves |
|---|---|---|
| 1 | 20 | 0 |
| 2 | 14 | 6 |
| 3 | 9 | 11 |
| 4 | 5 | 15 |
| 5 | 4 | 16 |
Give the term used for an animal that eats plants.
State whether the poison is a physical, chemical or mechanical plant defence.
Compare the numbers of deer that ate and did not eat leaves over the five days.
Calculate the percentage of the deer that did not eat leaves on day 5.
Explain how the poisonous leaves could have caused the change in feeding behaviour.
133 exam-style questions on AQA GCSE Biology 3.3 Plant disease, covering 3.3.1 Detection and identification of plant diseases and 3.3.2 Plant defence responses. Each one has a worked solution and a mark scheme showing where the marks go.