Phototropism
The growth of a plant in response to light direction—typically bending toward light (positive phototropism) to maximize photosynthesis. One of the most visible plant behaviors.
Biological Context
Auxin accumulates on the shaded side of the stem, causing cells there to elongate more than cells on the lit side. This differential growth bends the plant toward light. Roots often show negative phototropism, growing away from light. Phototropism allows plants to optimize light capture in competitive environments.
Business Application
Business phototropism: bending toward resource gradients. Companies that detect market opportunities and reallocate resources toward them are performing phototropism. The challenge is distinguishing real gradients from mirages and adjusting at the right speed.