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Question

Which phytochrome form is physiologically active?

Options

Choose one · Correct answer highlighted

Explanation

That points to B: Pfr. Compared with the other options, Pfr is the one that correctly describes the PSS-Sec-E-Sensory biology concept. The wrong ones are A) Pr; C) Both; D) Neither. If you’re stuck, eliminate anything that contradicts a basic fact you already know for this topic.