Practice question
Question
Which photoreceptor perceives day length and circadian rhythms?
Explanation
Correct option is C, Zeitlupe. In PSS-Sec-E-Sensory biology problems like this, the accurate statement is Zeitlupe; the others are common mix-ups. Not these: A) Cryptochrome; B) Phototropin; D) UVR8. Tissue transport questions usually turn on xylem vs phloem, living vs dead cells, or source vs sink.
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