Question:
Which of the following plant hormone promotes seed germination?
Which of the following plant hormone promotes seed germination?
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GA breaks dormancy and promotes germination.
ABA induces dormancy and inhibits germination.
Commercial use: GA is used to break dormancy in potato, apple seeds.
ABA induces dormancy and inhibits germination.
Commercial use: GA is used to break dormancy in potato, apple seeds.
Updated On: Aug 25, 2026
- Cytokinin
- Gibberellic acid
- Indoleacetic acid
- Abscisic acid
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Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
Plant hormones (phytohormones) regulate various physiological processes including seed germination.
Step 2: Detailed Explanation:
Gibberellic acid (GA) promotes seed germination.
It breaks seed dormancy and stimulates the production of amylase, which hydrolyzes starch into sugars.
This provides energy for the germinating embryo.
Other hormones:
- Cytokinin: Promotes cell division and apical dominance.
- Indoleacetic acid (IAA): Promotes cell elongation, root growth.
- Abscisic acid (ABA): Inhibits seed germination and promotes dormancy.
Thus, gibberellic acid promotes seed germination.
Step 3: Final Answer:
Thus, gibberellic acid promotes seed germination.
[0.5cm]
Plant hormones (phytohormones) regulate various physiological processes including seed germination.
Step 2: Detailed Explanation:
Gibberellic acid (GA) promotes seed germination.
It breaks seed dormancy and stimulates the production of amylase, which hydrolyzes starch into sugars.
This provides energy for the germinating embryo.
Other hormones:
- Cytokinin: Promotes cell division and apical dominance.
- Indoleacetic acid (IAA): Promotes cell elongation, root growth.
- Abscisic acid (ABA): Inhibits seed germination and promotes dormancy.
Thus, gibberellic acid promotes seed germination.
Step 3: Final Answer:
Thus, gibberellic acid promotes seed germination.
[0.5cm]
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