A-LevelBiologyTransport in plants9700/12 · Oct/Nov 2010 · Q231 Mark

Which processes are involved in transpiration? 1 the diffusion of water vapour from stomata 2 the mass flow of water through the xylem 3 the evaporation of water from spongy mesophyll cells 4 the evaporation of water vapour from exposed leaves

A1, 2, 3 and 4

B1 and 3 only

C1 and 4 only

D2, 3 and 4 only

✓ Correct answer

A: 1, 2, 3 and 4

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Topic: Transport in plants, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source: A-Level Biology, Oct/Nov 2010 Paper 1 Variant 2, question 23.

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