Question

Vernalisation can often be replaced by ______________.

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

Answer 1

The correct option is C Gibberellins

Vernalization is exposure of plants to a certain degree of cold conditions so as to make them flower, or break seed dormancy.

For example in Hyoscyamus niger a cold requiring long day plant when treated with GA, produced flowers in long day condition with out cold treatment. The exposure to GA made the plant produce hormone vernalin which induced flowering in the plant.

So, the correct answer is 'Gibberellins'