In plants overexpressing CIB1, flowering occurs:
Correct option is C, Earlier than wild type. In cryptochrome problems like this, the accurate statement is Earlier than wild type; the others are common mix-ups. Not these: A) Later than wild type; B) Same time as wild type; D) Only under short days. 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.