Which of the following substances induces "bolting," the rapid elongation of a plant stem?

Question

Quizplus · Accepted Answer

Gibberellins are plant hormones that promote stem elongation and can induce "bolting" in plants. Ethylene can also affect plant growth and development, but it is more commonly associated with fruit ripening and senescence rather than stem elongation. Phytochrome is a pigment involved in regulating plant responses to light, but it does not directly induce bolting. Abscisic acid is a hormone that generally opposes the effects of gibberellins and can inhibit growth rather than promote it.

Which of the Following Substances Induces "Bolting," the Rapid Elongation