BI-898
Transpiration pull
Biology · Secondary 3 · Medium · Transpiration pull
Water is pulled up the xylem of a tall tree from the roots to the leaves. Which statement best describes how this upward movement is maintained in the xylem vessels?
- Water is pushed up by high pressure generated in the root hairs only.
- Water is pulled up by evaporation of water from leaves creating a tension in the xylem.
- Water is pumped up by the rhythmic contractions of xylem vessel walls.
- Water is carried up by phloem and then diffuses sideways into xylem.
Sign in to check your answer and see the hint and the worked explanation. Free on PrepLab High.