Question

Which of the following hormones can replace vernalization?

• A. Ethylene
• B. Gibberellins
• C. Cytokinins
• D. Auxins

Answer 1

The correct option is B Gibberellins

Vernalization is acquisition of ability of plants to flower by chilling treatment. In absence of cold treatment, accumulation of ent-kaurenoic acid in shoot tip occurs. Cold treatment followed by exposure to high temperatures convert it into $G{A}_9$, which stimulates flowering response in plants. Thus, gibberellins can substitute the vernalization. Thus, option B is correct.