This protocol allows students to investigate the effects of the hormone auxin (Indole Acetic Acid or IAA) as a plant growth regulator, giving opportunities to look at auxiliary bud development, root development, and leaf abscission in Coleus. The method is suitable for independent investigations by students. Two potential investigations are suggested.

The resource is suitable for post-16 students.

Download the student worksheet, questions and suggestions for investigations from the links on the right.