Plant Hormones · Botany

Which plant hormone promotes stem elongation and seed germination?

  1. Ethylene
  2. Auxin
  3. Gibberellin
  4. Abscisic acid
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Correct answer: Gibberellin

Gibberellins promote stem elongation, seed germination, and flowering in some plants. They play an important role in breaking seed dormancy.

Difficulty: Medium Question 4 of 20

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