Practice question
Question
Under canopy shade, plants show increased stem elongation due to:
Explanation
That points to B: Low Pfr. Compared with the other options, Low Pfr is the one that correctly describes the PSS-Sec-E-Sensory biology concept. The wrong ones are A) High Pfr; C) High Pr; D) Absence of phytochrome. If you’re stuck, eliminate anything that contradicts a basic fact you already know for this topic.
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