A-LevelBiologyTransport in plants9700/12 · Oct/Nov 2018 · Q271 Mark
Which statement correctly describes an event in the process of mass flow in phloem sieve tube elements?
AAny part of a plant where sucrose is loaded into a sieve tube element is called a sink.
BLoading sucrose into a sieve tube element increases the water potential inside it.
CMass flow in the phloem is a passive process occurring at the same rate as diffusion.
DSucrose moves down a hydrostatic pressure gradient in the phloem from source to sink.
✓ Correct answer
D: Sucrose moves down a hydrostatic pressure gradient in the phloem from source to 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 →