The table shows the concentration of three different ions inside the cells in a plant root and
in the water in the soil
Ion Concentration in plant root cells /m3 Concentration in soil water /m3
A 0.5 0.5
B 1.0 0.4
C 0.6 0.8
a. Which ion has been moved into the root hair by active transport? Explain your answer. [2]
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b. Which ion has moved into the root hair by diffusion? Explain your answer. [2]
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c. Which ion has been moved out of the root hair by active transport? Explain your answer.
a) Ion B
b) Ion C
c) Ion A
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