Practice question

The right choice is B: Negative regulator of trichomes. In Jasmonic acid, that matches how the process or concept actually works — the other choices mix up related ideas or use the wrong mechanism. Skip these: A) Positive regulator of trichomes; C) JA receptor; D) JA enzyme. A quick check: if an option needs energy, pumps, or the opposite direction of movement, ask whether that really applies.