Practice question

Answer: B) Interconversion between Pr and Pfr. For PHYTOCHROME, remember the key idea and you’ll land on this option; the distractors usually swap cause and effect or confuse similar terms. Avoid: A) Degradation of phytochrome in light; C) Binding of chromophore; D) Movement into nucleus. Name the process first, then pick the option that describes it — don’t reverse cause and effect.