A) ethylene
B) cytokinins
C) gibberellins
D) indole acetic acid
Correct Answer: C
Solution :
Gibberellin or gibberellic acid promote internodal cell elongation in wide range of species. This internodal elongation phenomenon is known as blotting. This plant hormone was first time isolated from fungus Gibberella fujikuroi (Fusarium moniliformi) in Japan.
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