● In this experiment, my lab partner and I wanted to examine the taxis of planarians. Taxis is an innate behavior behavioral response by an organism to a stimulus where an organism moves either towards the positive taxis or away from negative the taxis of the stimulus. There are different types of taxis which include chemotaxis, hydrotaxis, phototaxis, chemotaxis, and thigmotaxis. Phototaxis is a behavior in which the organisms show a spatial relationship to a source of stimulation, even though the individuals are not oriented to the stimulus (Phillip, 1936). The optimal zone acts as a trap for the organisms. At the limit of the zone the animal responds by performing a shock reaction, so that it's direction of movement is reversed or
