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    Biology A-Level

    IAA

    What IAA means in Biology A-Level, as defined for AQA.

    Definition of IAA

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    Read the wording for your board, then hide it and explain IAA in your own words. Rough notes are fine. This is a self-check, with no mark or grade.

    Reference: AQA

    Indoleacetic acid, the growth factor the specification names, produced in the meristems at shoot tips and root tips.
    AQA · Survival and response (A-level only) (study guide)

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    Using IAA in the exam

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