This piece calls to attention three types of response plants exhibit: hydrotropism, thigmotropism, and geotropism. I want you to think about the grass you walk over everyday. Think about the birds or even the bacteria in your stomach. Each of these living things has an environment it inhabits, and responds to changes within it. Depending on the requirements of the organism, different living things will have different types of responses.

 

     A blind mole may not be receptive to visual signals however may be highly responsive to sound stimuli. Humans might not be able to feel a bacterium cell if it were on the surface of their skin, however if bacteria came in contact with their white blood cells there would be a response. Deciduous trees notice the drop in temperature during fall and change their metabolic processes to prepare for winter. This piece urges you to look at the world around you in a different light. Notice the living things interacting with the world, and the world interacting with living things.