Biology A-Level
indoleacetic acid
What indoleacetic acid means in Biology A-Level, as defined for AQA.
Definition of indoleacetic acid
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Reference: AQA
A substance whose different concentrations affect cell elongation in the roots and shoots of flowering plants, explaining gravitropism and phototropism.
Topics that use indoleacetic acid
- Survival and response (A-level only) (AQA A-Level)
Related terms
- Chi-squared (χ²) test
- Controlled variables
- favourable environment
- independent and dependent variables
- meristems
- phototropism and gravitropism
- plant growth factors
- receptor specificity
Using indoleacetic acid in the exam
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