The synthesis of which of the following hormones would be a logical first choice in an attempt to produce normal growth in mutant dwarf plants?
A) indoleacetic acid
B) cytokinin
C) gibberellin
D) abscisic acid
E) ethylene

Question

Quizplus · Accepted Answer

Gibberellin is a hormone that promotes stem elongation, cell division, and cell expansion in plants. Mutant dwarf plants are deficient in gibberellin, thus supplementation or synthesis of gibberellin would promote normal growth and development in these plants. Indoleacetic acid and cytokinin regulate lateral growth and shoot formation, respectively, so they would not be effective in promoting overall plant growth. Abscisic acid and ethylene are involved in plant stress responses and senescence, respectively, and would not promote normal growth in mutant dwarf plants.

The Synthesis of Which of the Following Hormones Would Be