phototropism

Growth or movement of a sessile organism toward or away from a source of light.

The growth or the bending of organisms or of parts of organisms in relation to light; heliotropism.

Same as phototaxis, 2.

Same as phototropy, 2.

The tendency of growing plant organs to move or curve under the influence of light. In ordinary use the term is practically synonymous with heliotropism.

exhibiting movement in a direction toward (positive phototropism) or away from (negative phototropism) a source of light.

the movement of a plant towards or away from light

an orienting response to light