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
Taxis in India air-conditioning. The newer taxis are white, one of the many reasons why the expensive taxis have been dubbed White Taxis by the locals in cities. Taxis and all other commercial vehicles have a yellow number plate so charging taxes and toll in highways is easier for the officials. Depending on the city/state, taxis can either be hailed or are hired from taxi-stands. In cities such as Bangalore, taxis need to be hired from taxi stands, whereas in cities like Kolkata and Mumbai, taxis can be hailed on the street. There are additional surcharges for luggage, late-night rides and toll taxes