Root Depth Model

Students will create a visual representation of the diverse spectrum of root depths of biofuel crops and prairie plants in this activity using raffia ribbon. The resulting wall hanging can facilitate discussion on carbon sequestration in plants and plant contribution to carbon in soil. This Root Depth Model is targeted at middle school through undergraduate students (grades 6 through 16), and requires basic knowlege of plant anatomy and physiology, characteristics of annual vs. perennial crops, photosynthesis, and the carbon cycle. One to two 50-minute class periods are needed to complete the activity. To create the visual representation, instructors will need: paper/cardstock, a paper cutter (optional), scissors, tape, and raffia ribbon. The activity package, "Root Depth Model," can be downloaded as a .zip file (11.1 MB) and includes directions and references, two banners "Root Depths of Prairie Plants" and "Root Depths of Biofuel Crops."