A-LevelBiologyTransport in plants9700/12 · May/June 2015 · Q241 Mark
What is the sequence of events in the translocation of sucrose?
Aactive loading of sucrose into sieve elements at the source, increased hydrostatic pressure, mass flow, unloading at the sink
Bhydrolysis of storage compounds in sinks, lowered water potential, unloading of sucrose from sieve elements, mass flow from the source
Clowered pressure in sieve elements at the source, movement of sucrose down the pressure gradient, mass flow down a diffusion gradient to the sink
Dmass flow of dissolved sucrose into the sieve element at the source, lowered hydrostatic pressure, diffusion of sucrose to sink, active unloading
✓ Correct answer
A: active loading of sucrose into sieve elements at the source, increased hydrostatic pressure, mass flow, unloading at the sink
Practise more questions on this topic
Oracle Prep sorts past-paper questions by topic, so you can drill Transport in plants and see which topics are most likely to come up next.
Sign up free →