Methionine serves as precursor for biosynthesis of:
Pick B: Glucosinolates. Thinking through PSS- Sec G- Sec metabolites step by step rules out the lookalikes and leaves Glucosinolates. Skip these: A) Alkaloids; C) Phenolics; D) Terpenoids. 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.