Biology GCSE
boundary layer
What boundary layer means in Biology GCSE, as defined for OCR.
Definition of boundary layer
Check what you remember
Read the wording for your board, then hide it and explain boundary layer in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
The layer at the leaf surface from which increased air movement sweeps away accumulating water vapour, maintaining a steep concentration gradient.
Topics that use boundary layer
- The challenges of size (OCR GCSE)
Related terms
- active transport of minerals
- arteries
- blood plasma
- compound measures
- diffusion distances
- double circulatory system
- erythrocyte adaptations
- Exchange surfaces
Using boundary layer in the exam
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