Cytokinins are adenine derivatives with which side chain?
Pick B: Isoprenoid. Thinking through Cytokinin step by step rules out the lookalikes and leaves Isoprenoid. Skip these: A) Phenyl; C) Steroid; D) Indole. For hormones and genes, match the molecule or gene to its real role, not a neighboring pathway.
Ref: Best CSIR NET Plant Physiology books: Master Unit 6 with Taiz & Zeiger and Salisbury & Ross. Crack Part C experimental questions with top textbooks.
