Multiple choice

Which of the following hormones promotes internodal 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 is the hormone which promotes internodal elongation. It can stimulate rapid stem and root growth, induce mitotic division in the leaves of some plants and increase seed germination rate.