Changes

'''Taxis''' is the movement of organisms either toward or away from a stimulus, such as [[light]] (phototaxis), [[heat]] (thermotaxis), chemicals (chemotaxis), [[gravity]] (geotaxis), and touch (thigmotaxis).  

'''Taxis''' is the movement of organisms either toward or away from a stimulus, such as [[light]] (phototaxis), [[heat]] (thermotaxis), chemicals (chemotaxis), [[gravity]] (geotaxis), and touch (thigmotaxis). A taxis differs from a [[tropism]] in that  a taxis implies guided movement in relation to the stimulus, whereas the term tropism only implies growth or turning. [http://news.yahoo.com/s/nm/usa_food_dc;_ylt=AqWnF24t_YXSO7OjOvLhSGWs0NUE]

[[Category:Biology]]

[[Category:Biology]]