Key term for OCR GCSE Biology A, used in Health and disease.
A tough, complex polymer deposited in plant cell walls that makes them extremely tough and resistant to physical and enzymatic penetration.
Lignin appears in OCR GCSE Biology A revision content for Global challenges, especially Health and disease and Physical plant defences.
Global challenges
Health and disease • Physical plant defences
Scaling up
The challenges of size • Factors affecting water uptake
Scaling up
The challenges of size • Xylem and phloem
Scaling up
The challenges of size • Transpiration and translocation
Scaling up
Supplying the cell • Cell differentiation
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