Biology A (Salters-Nuffield) A-Level
Lignin
What Lignin means in Biology A (Salters-Nuffield) A-Level, as defined for Pearson Edexcel.
Definition of Lignin
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Read the wording for your board, then hide it and explain Lignin in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: Pearson Edexcel
A substance in secondary walls that makes xylem vessels rigid and waterproof so they withstand negative pressure.
Topics that use Lignin
- Topic 4: Biodiversity and Natural Resources (Pearson Edexcel A-Level)
Related terms
- Adaptation and speciation
- Allele frequency change over time
- Amyloplast
- Aseptic technique
- Binary fission
- Biodegradability
- Calcium and magnesium in plant structure and function
- Cellulose
Using Lignin in the exam
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