Which one of the following acids is a derivative of carotenoids?
Indole-butyric acid
Indole-3-acetic acid
Gibberellic acid
Abscisic acid
Plant Growth Regulators (PGRs) display diverse chemical compositions. They include indole compounds (like indole-3-acetic acid), adenine derivatives (like kinetin), terpenes (like gibberellic acid), and derivatives of carotenoids (specifically abscisic acid, ABA) .
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