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#photobiology MCQ

3 public questions tagged with this topic.

Cryptochrome is primarily a photoreceptor for which wavelength range?

Answer: B) Blue light (400–500 nm). For cryptochrome, remember the key idea and you’ll land on this option; the distractors usually swap cause and effect or confuse similar terms. Avoid: A) Red/far-red light; C) Green light; D) Infrared light. Name the process first, then pick the option that describes it — don’t reverse cause and effect.

Ref: Best CSIR NET Plant Physiology books: Master Unit 6 with Taiz & Zeiger and Salisbury & Ross. Crack Part C experimental questions with top textbooks.

UVR8 signaling activates transcription factor:

Correct option is B, HY5. In PSS-Sec-E-Sensory biology problems like this, the accurate statement is HY5; the others are common mix-ups. Not these: A) PIF; C) MYC2; D) BZR1. Tissue transport questions usually turn on xylem vs phloem, living vs dead cells, or source vs sink.

Ref: Best CSIR NET Plant Physiology books: Master Unit 6 with Taiz & Zeiger and Salisbury & Ross. Crack Part C experimental questions with top textbooks.