Scientists investigated the stomatal density on leaves of a certain species of cherry laurel. They used a light microscope to count the number of stomata in four square fields of view.
The edge of each square field of view measured 400 μm400\text{ }\mu\text{m}400 μm.
The number of stomata recorded in the four fields of view were:
Calculate the mean stomatal density for these fields of view. Give your answer as the number of stomata per mm2\text{mm}^2mm2. Show your working.
8 exam-style questions on AQA A Level Biology Gas exchange, covering Gas exchange. Each one has a worked solution and a mark scheme showing where the marks go.