Plant Hormones — Mains Questions

Discuss the intricate interplay between auxins and cytokinins in regulating plant growth and development. How is this understanding leveraged in modern agricultural biotechnology?

Abscisic Acid (ABA) is often termed the 'stress hormone' in plants. Elucidate its multifaceted roles in enabling plants to cope with various environmental stresses. What are the challenges and prospects of utilizing ABA in climate-resilient agriculture?

Examine the commercial significance of plant growth regulators (PGRs) in modern agriculture and horticulture. Highlight how advancements in biotechnology are enhancing their utility and addressing contemporary challenges.