Monoterpenes contain how many carbons?
Pick B: 10. Thinking through PLANT SEC METABOLITES step by step rules out the lookalikes and leaves 10. Skip these: A) 5; C) 15; D) 20. 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.