1.

Growth in internodal regions of green plants is due toA. indole acetic acidB. cytokininsC. gibberellinsD. ethylene

Answer» Correct Answer - C
Gibberellin `(GA_3)` promotes internodal elongation in a wide range of species. This intemodal elongation phenomenon is known as bolting
Gibberellin is a plant growth hormone which was first time obtained from a fungus Gibberella fujikuroi (Fusarium moniliformi)


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