O-LevelBiologyTransport in Plants5090/11 · May/June 2017 · Q121 Mark

An area of grassland becomes flooded with sea-water. Sea-water contains a high concentration of salt. What is the effect of the sea-water on the functions of the root hairs?

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Auptake of ions by root hairs: no longer occurs, uptake of water by root hairs: no longer occurs

Buptake of ions by root hairs: no longer occurs, uptake of water by root hairs: still occurs

Cuptake of ions by root hairs: still occurs, uptake of water by root hairs: no longer occurs

Duptake of ions by root hairs: still occurs, uptake of water by root hairs: still occurs

✓ Correct answer

C: uptake of ions by root hairs: still occurs, uptake of water by root hairs: no longer occurs

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Topic: Transport in Plants, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2017 Paper 1 Variant 1, question 12.

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