Plant Hormones · Botany

Which plant hormone regulates dormancy and inhibits germination under unfavorable conditions?

  1. Brassinosteroid
  2. Abscisic acid
  3. Cytokinin
  4. Gibberellin
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Correct answer: Abscisic acid

Abscisic acid maintains seed dormancy and prevents germination until conditions become favorable. It acts as a growth-inhibiting hormone.

Difficulty: Medium Question 20 of 20

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