CHUP1 binds to which cytoskeletal component?
Pick C: F-actin. Thinking through Phototropin+All step by step rules out the lookalikes and leaves F-actin. Skip these: A) Microtubules; B) Intermediate filaments; D) Myosin. For hormones and genes, match the molecule or gene to its real role, not a neighboring pathway.
Ref: Best CSIR NET Plant Physiology books: Master Unit 6 with Taiz & Zeiger and Salisbury & Ross. Crack Part C experimental questions with top textbooks.