Biology 5090 · O Level · Transpiration and translocation
Transpiration and translocation — practice question
The graph plots the water-loss rates of three plants, D, E and F, over the first 14 minutes of an experiment. These plants are from different species, but they are all grown under identical conditions.
(a)[1]
Name the process through which plants lose water to the atmosphere.
(b)[3]
Suggest three reasons why the water-loss rates differ among the three plant species.
(c(i))[2]
Continue the graph lines to indicate what would occur to the water-loss rates of plants E and F.
(c(ii))[5]
Explain why each line you have drawn for plant E and plant F has that shape.
Worked solution & mark scheme
This 11-mark question has a full step-by-step worked solution and mark scheme. One marking point: “transpiration, evaporation or diffusion” …