A-LevelBiologyTransport in plantsMay/June 2013Paper 1 Q281 Mark
Halophytes are plants that can survive in regions where they are regularly exposed to sea water. Sea water has a water potential of approximately –2500 kPa. Which adaptation would you expect halophytes to show?
Aroot hair cells with a very high water potential
Broot hair cells which accumulate salts and other solutes
Chigh density of stomata that are open most of the time
Dleaves that have a large surface area and a thick cuticle
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The correct answer is B. This question tests the candidate's understanding of transport in plants within the Biologysyllabus. The examiner's mark scheme requires...
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