Biodiversity And Conservation

Vernalization is the induction of a plant's flowering process by exposure to a prolonged period of cold temperatures. It is commonly observed in biennial plants such as cabbage, beet, and carrot, which require a chilling period to initiate flowering in the second year of growth.
Cabbage is a biennial plant that exhibits a strong vernalization response — exposure to cold triggers the photo-periodic flowering response. This means that after vernalization, the plant becomes competent to respond to day-length conditions, thereby initiating flowering.
Thus:
- Assertion (A) is correct: Vernalization is indeed seen in biennials.
- Reason (R) is also correct and explains why vernalization is important in cabbage (a biennial), linking cold treatment to its flowering mechanism.