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Questions – Plant Growth Regulation 1. The plant hormone responsible for promoting cell division, shoot initiation, leaf enlargement, and germination is A) B) C) D) E) 2. Which growth regulator is more likely to stimulate internode elongation and may promote flowering? A) B) C) D) E) 3. true false A plant growth hormone that promotes organ “drop” is A) B) C) D) E) 5. Ethylene Abscisic acid Cytokinin Auxin Gibberellin The following statement, “all plant hormones are plant growth regulators, but not all plant growth regulators are plant hormones,” is A) B) 4. cytokinin gibberellin auxin ethylene abscisic acid gibberellin abscisic acid auxin kinetin cytokinin Which plant growth regulator is more likely to be found in stressed tissue and ripening fruits? A) B) C) D) E) Gibberellin Kinetin Cytokinin Auxin Ethylene Answers: 1-A, 2-E, 3-A, 4-B, 5-E