AIIMS 2018 Botany Plant Hormones MCQ Question

Indole, a key component of auxins, plays a crucial role in plant growth and development, making option D correct as it accurately identifies the nature of auxins. Gibberellins are indeed associated with terpenes, which are a class of organic compounds, while cytokinins are derivatives of adenine that promote cell division, and abscisic acid (ABA) is derived from carotenoids, which are pigments involved in photosynthesis. Other options are not provided, but understanding the biochemical pathways and classifications of these plant hormones is essential for grasping their functions in plant physiology.