In lignin biosynthesis, feedback inhibition regulates which enzyme in the pathway?
C fits best: Z. Keep the PSS- Sec G- Sec metabolites basics straight and Z stands out as the precise answer. Avoid: A) X; B) Y; D) All enzymes. 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.