2.79 Plants and Stimuli

- Stimuli are changes in the environment, Temperature or light. 
- Plants have receptors that detect stimuli and turn into response
- Response - Take form of growth - Tropism, involving light (phototropism)
                                                     - Tropism, involving Gravity (Geotropism) 
- Connection between Receptor and Response - takes form of Plant hormones (plant growth regulators). Example: Auxim