Physiological Effects of Abscisic Acid (ABA) and Gibberellic Acid Physiological Effects of Abscisic Acid and Gibberellic Acid: Gibberellin (Gibberellic Acid) and Abscisic Acid (ABA) are two important plant hormones. Plant Hormones also called ‘Phytohormones’ or ‘Plant Growth Substances’, are signaling molecules produced in very minute quantities in the plants that […]