A-LevelBiologyTransport in plants9700/12 · Oct/Nov 2025 · Q301 Mark
Which row correctly identifies the definitions for each of the key terms used in transpiration?
Aattraction between water molecules and walls of the xylem vessel: cohesion, effect created by evaporation of water from the surface of the leaf: adhesion
Battraction between water molecules and walls of the xylem vessel: adhesion, effect created by evaporation of water from the surface of the leaf: tension
Cattraction between water molecules and walls of the xylem vessel: cohesion, effect created by evaporation of water from the surface of the leaf: tension
Dattraction between water molecules and walls of the xylem vessel: tension, effect created by evaporation of water from the surface of the leaf: cohesion
✓ Correct answer
B: attraction between water molecules and walls of the xylem vessel: adhesion, effect created by evaporation of water from the surface of the leaf: tension
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