Students investigated the number of daisy plants growing on a school field. They used a square frame with sides of 0.5 m.
Name the square frame used by the students.
The students placed the square frames at random positions on the field. Give one reason why the positions were chosen at random.
40 exam-style questions on AQA GCSE Biology 7.2 Organisation of an ecosystem, covering 7.2.1 Levels of organisation, 7.2.2 How materials are cycled, 7.2.3 Decomposition, and 7.2.4 Impact of environmental change (HT only). Each one has a worked solution and a mark scheme showing where the marks go.