A-LevelBiologyTransport in plants9700/12 · Oct/Nov 2018 · Q181 Mark
The diagram shows a xylem vessel in a root and four adjacent parenchyma cells. As water moves up the xylem vessel, it is replaced by water from cell D. Water in cell D is replaced by water in cell C, resulting in a flow of water from cell A to the xylem. Which cell has the least negative water potential?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
A[Cell A]
B[Cell B]
C[Cell C]
D[Cell D]
✓ Correct answer
A: [Cell A]
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