Practice question
Question
Which forms of phytochrome is biologically active?
Explanation
Answer: B) 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) Pr; C) Both; D) None. Name the process first, then pick the option that describes it — don’t reverse cause and effect.
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