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
Four of a Kind (TV series) Four of a Kind (TV series) Four of a Kind is a reality series that airs on Lifetime in the United States and TVtropolis in Canada. It is produced by Asylum Entertainment. The program follows the Durst sisters, Calli, Kendra, Megan, and Sarah, quadruplets who live in Buffalo, Minnesota. The Dursts are one of about 60 known sets of quadruplets worldwide. The program also features their mother, Naomi, and older brother, Travis. The sisters appeared on several television programs as pre-schoolers, including "The Tonight Show with Jay Leno" and "The Today Show". During the girls' senior year, their mother agreed