Multiple choice

Which of the following hormones promotes inter-nodal elongation?

  1. Auxin

  2. Gibberellic acid

  3. Cytokinin

  4. Abscisic acid
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Gibberellic acid (GA) promotes internodal elongation in plants, making stems longer between nodes. This is especially important in dwarf varieties and during bolting. Auxins promote cell elongation but are more associated with apical dominance and phototropism. Cytokinins promote cell division, and abscisic acid inhibits growth.

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