1. Geotropism 3. Thigmotropism 2. Hydrotropism 4. Phototropism Using the information provided write a definition for the following words and think of an example for each: 1. Geotropism 3. Thigmotropism 2. Hydrotropism 4. Phototropism Tropism- Latin Roots “geo”= Earth “hydro” = water “thigmo”= touch “photo”= light the turning of a plant in response to a stimulus, either towards or away from the stimulus Once you have completed your definitions, pick up a Tropisms half sheet. Check your definitions and complete the questions in your notebook.

On the left side: Explain the similarities and differences between plants responding to hormones and plant tropisms.