A-LevelBiologyTransport in plants9700/12 · Feb/Mar 2019 · Q271 Mark
A heating sleeve was placed around the trunk of a small tree at a height of 1 m above the ground. This allowed a narrow region of the tree trunk to be heated to 60 °C. How will heating this region to 60°C affect the transport of phloem sap and xylem sap between the roots and leaves?
Amovement of phloem sap: ✓, movement of xylem sap: ✓
Bmovement of phloem sap: x, movement of xylem sap: ✓
Cmovement of phloem sap: ✓, movement of xylem sap: x
Dmovement of phloem sap: x, movement of xylem sap: x
✓ Correct answer
C: movement of phloem sap: ✓, movement of xylem sap: x
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