To investigate how plant species distribution changes from the edge of a woodland into an open meadow, a group of students laid a 30 m tape measure perpendicular to the woodland edge. They placed a quadrat at regular 2 m intervals along the tape measure to record the percentage cover of plant species.
Which of the following terms correctly describes this sampling method?
opportunistic
random
stratified
systematic
37 exam-style questions on OCR A A Level Biology Ecosystems. Each one has a worked solution and a mark scheme showing where the marks go.