A-LevelBiologyTransport in plants9700/12 · May/June 2020 · Q271 Mark
Which changes occur as carbohydrates move out of a root cell into a phloem sieve tube? [Figure 27.1]
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Awater potential in a phloem sieve tube becomes: less negative, volume of liquid in phloem sieve tube: decreases
Bwater potential in a phloem sieve tube becomes: less negative, volume of liquid in phloem sieve tube: increases
Cwater potential in a phloem sieve tube becomes: more negative, volume of liquid in phloem sieve tube: decreases
Dwater potential in a phloem sieve tube becomes: more negative, volume of liquid in phloem sieve tube: increases
✓ Correct answer
D: water potential in a phloem sieve tube becomes: more negative, volume of liquid in phloem sieve tube: increases
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