Skip to content

#phytochrome forms MCQ

2 public questions tagged with this topic.

In dark-grown seedlings, phytochrome is predominantly present as:

B fits best: Pr. Keep the PHYTOCHROME basics straight and Pr stands out as the precise answer. Avoid: A) Pfr; C) Degraded form; D) Inactive dimer. Light and flowering items often hinge on which photoreceptor or day-length rule is in play.

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

Which forms of phytochrome is biologically active?

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.

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