Florida Ag Tag

Support FAITC Programs!

Your purchase of Florida's "Ag Tag" license plate benefits the Florida Agriculture in the Classroom Program.

Get the Ag Tag

Plant Hormones and Tropic Responses


There are many hormones in plants and they all play different roles. In this lesson students will learn about hormones such as ethylene, gibberellins, cytokinin, absiscic acid and the application of hormones in commercial horticulture.

Tropic responses in plants are those responses to light, gravity and touch. In this lesson students will learn about the different tropic responses and set up experiments to demonstrate hormone effects and plant responses to stimulus. Data will be collected and summarized in tables and graphs.


Students will:

  1. Grow a plant from a seed.
  2. Identify parts of a plant and plant cells.
  3. Understand the role plant hormones play in plant growth.
  4. Understand what plant tropisms are.
  5. Work in groups to design and conduct an experiment to demonstrate a plant hormone or tropic response.


Part I. Plant Structure

Introduction: 15 to 20 minutes

Activity 1: Up to three 50 minute class periods

Part II. Plant Hormones and Tropisms

Introduction: Up to one 50 minute class period

Activity 1: Up to four 50 minute class periods

Teaching Resources

Bring agriculture into the classroom with lesson plans, activities, and resources for any subject or grade level. Download or request one of our school gardening books for comprehensive resources students will love!

Support Agriculture Education

Get the Ag Tag