Translocation of organic solutes through the phloem Flashcards
1
Q
What is translocation
A
The movement of organic substances in the phloem
2
Q
What does translocation require?
A
Energy
Two-way flow
3
Q
Evidence for energy?
A
In plants that have had cyanide put in them, ATP production stops. This also stopped translocation
4
Q
Evidence for two-way flow and what it is
A
- Two-way flow is the movement of molecules up and down the phloem (mostly sucrose)
- Radioactively labelled sucrose shows two-way flow occurring
