A-LevelBiologyTransport in plants9700/12 · May/June 2010 · Q71 Mark
What occurs in the sieve tube elements of a photosynthesising leaf and an actively growing root?
Asieve tube elements in leaf: water potential decreases; sieve tube elements in root: sugars are moved in
Bsieve tube elements in leaf: water potential decreases; sieve tube elements in root: sugars are moved out
Csieve tube elements in leaf: water potential increases; sieve tube elements in root: sugars are moved in
Dsieve tube elements in leaf: water potential increases; sieve tube elements in root: sugars are moved out
✓ Correct answer
B: sieve tube elements in leaf: water potential decreases; sieve tube elements in root: sugars are moved out
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