Taxis response is to move towards or away from the stimulus. If the organism moves towards the stimulus the taxis is positive, while if it moves away the taxis is negative. For example, flagellate protozoans of the genus "Euglena" move towards a light source. This reaction or behaviour is called "positive phototaxis", since phototaxis refers to a response to light and the organism is moving towards the stimulus. Many types of taxis have been identified, including: Depending on the type of sensory organs present, a taxis can be classified as a "klinotaxis", where an organism continuously samples the environment to determine
Prince Gustav of Thurn and Taxis Prince Gustav of Thurn and Taxis Prince Gustav Franz Maria of Thurn and Taxis, full German name: "Gustav Franz Maria, Prinz von Thurn und Taxis" (22 August 1888, Dresden, Kingdom of Saxony – 30 April 1919, Munich, Bavarian Soviet Republic), was a member of the House of Thurn and Taxis and a Prince of Thurn and Taxis by birth. As a member of the Thule Society, Gustav was killed by the Bavarian Soviet Republic () government during the German Revolution of 1918–19. Gustav was the fourth child and second son of Prince Franz of Thurn and Taxis and his wife