A-LevelBiologyTransport in plants9700/12 · Oct/Nov 2018 · Q281 Mark
The diagram shows a potato tuber at different stages. 1 dormant tuber (not growing) 2 sprouting roots and shoots 3 growing roots and shoots 4 making new potato tubers Which row identifies a stage where a potato tuber acts as a source and a stage where it acts as a sink?
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.
A1, 3
B2, 4
C3, 2
D4, 1
✓ Correct answer
B: 2, 4
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