Question

Which of the following breaks the dormancy of seeds?

• A. IAA
• B. GA${}_3$
• C. Auxin
• D. All of the above

Answer 1

The correct option is B GA${}_3$

Gibberellins are growth promoting phytohormones. Gibberellic acid (GA3) is a form of gibberellin that promotes the seed germination or breaks seed dormancy in certain plants. In a classic experiment involving barley seed germination. It produces long stems with broader leaves and enhances photosynthesis.