AIIMS 2018 Botany Abscisic Acid MCQ Question

Abscisic acid (ABA) primarily functions as a plant hormone that regulates stress responses, particularly during drought conditions, rather than directly aiding in general plant metabolism. Option A is incorrect because ABA's role is more about signaling for stress adaptation than enhancing metabolic processes like photosynthesis or respiration. Options B, C, and D are correct as ABA acts antagonistically to gibberellins (GA₃), promotes seed maturation and dormancy, and influences morphogenesis by regulating growth and development in response to environmental cues.