BI-836
Transpiration pull
Biology · Secondary 3 · Medium · Transpiration pull
Which statement correctly describes transpiration pull in a tall tree?
- It is the active pumping of water by root hairs into the soil.
- It is the diffusion of water vapour from the leaf into the air spaces.
- It is the upward movement of water and mineral salts in the xylem due to evaporation at the leaves.
- It is the downward flow of sugars in the phloem from leaves to roots.
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