Tendency to movement stimulated by a light source . It is typical of plants that seek sunlight for the growth of their stem. From Greek 966; 969; 962; , 966; 969; 964; 959; 962; (phoos, pootós "light, of the light") 964; 961; 959; 960; 959; 962; (tropes "spin, movement in one direction") - 953; 963; 956; 959; 962; ( -ismós "-ismo" ) .
It is the response of a plant to a light stimulus It means that it is oriented or directed towards the light, positive phototropism (it can also be the tendency to move away from the light, negative phototropism). In biology it is the quality of plants that they tend to orient themselves where there is light.
