CK-12 Foundation
Ck 12: Life Science: Plant Hormones
[Free Registration/Login may be required to access all resource tools.] Plants may not move, but that does not mean they don't respond to their environment. Plants can sense gravity, light, touch, and seasonal changes. Learn more about...
McGraw Hill
Glencoe Biology: Plant Hormones and Responses: Self Check Quiz
This multiple-choice quiz on plant hormones and responses allows students to get hints for each question and check their answers after submitting.
BBC
Bbc: Gcse Bitesize: Plant Hormones
Plants produce hormones and respond to external stimuli, growing towards sources of water and light, which they need to survive. Read about tropisms and auxins that are used to control growth in plants. There is a quiz at the end.
McGraw Hill
Mhhe: Plant Growth and Growth Regulators
A very good overview of the hormonal control of plant responses to different environmental cues. Good place to start research.
Other
Kitchen Culture Kits, Inc.: Plant Tissue Culture
An excellent site for learning about plant tissue culture. Great visuals and easy to understand instructions. Lots of links to other good sources.