Biology A-Level
Cohesion and adhesion
What Cohesion and adhesion means in Biology A-Level, as defined for OCR.
Definition of Cohesion and adhesion
Check what you remember
Read the wording for your board, then hide it and explain Cohesion and adhesion in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
Cohesion between water molecules and adhesion to xylem walls, combined with tension from evaporation, pull water up the xylem.
Topics that use Cohesion and adhesion
- Transport in plants (OCR A-Level)
Related terms
- Control of environmental variables
- Hydrophyte
- Osmosis
- Potometer
- Rate calculation
- Source-to-sink transport of assimilates
- Surface area to volume ratio in plants
- Thin sections
Using Cohesion and adhesion in the exam
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