Plants defective in vernalization pathway show which phenotype under normal growth?
Delayed flowering (B) is correct here. This is core PSS-Sec-E-Sensory biology: once you know the definition or pathway step, Delayed flowering is the clear fit. The wrong ones are A) Early flowering; C) No change in flowering; D) Complete sterility. If the topic is about gradients or potentials, water/solutes move from higher to lower of the relevant quantity.
Ref: Best CSIR NET Plant Physiology books: Master Unit 6 with Taiz & Zeiger and Salisbury & Ross. Crack Part C experimental questions with top textbooks.