Which enzyme catalyzes formation of JA-Ile?
Pick D: JAR1. Thinking through Jasmonic acid step by step rules out the lookalikes and leaves JAR1. Skip these: A) LOX; B) AOS; C) AOC. 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.