Chapter 35: Activities
Activity 35.1 Plant Hormones
Plant hormones, like animal hormones, are organic molecules that are active in low concentrations at target sites removed from the site of their synthesis. Hormones function as signal molecules and developmental regulators; they control such processes as photo-, thigmo-, and gravitropism as well as seed germination and leaf senescence. In this activity, which uses auxin indole acetic acid as an example, youll view the basic principles of hormone structure, transport, and activity.
Chapter 35, Section 35.1, Phototropism