phototaxis
/ˌfəʊtəʊˈtæksɪs/noun
(pl. phototaxes)［mass noun］
1- Biology the bodily movement of a motile organism in response to light, either towards the source of light (positive phototaxis) or away from it (negative phototaxis)【生】趋光性。比较PHOTOTROPISM.
1.1
- count noun a movement of this kind趋光运动。
派生词