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O-LevelBiologyTransport in Plants5090/12 · May/June 2014 · Q121 Mark

What is the main source of the energy that causes water to rise up a plant stem?

Adifference in water potential between cell sap and soil water
Bheat from the Sun
Clight absorbed by chlorophyll
Drespiration of sugars made in photosynthesis

✓ Correct answer

B: heat from the Sun

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About this question

Topic
Transport in Plants, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source
O-Level Biology, May/June 2014 Paper 1 Variant 2, question 12.

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