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The directional growth of a plant in response to sunlight.
- ‘The adaptive significance of solar tracking in snow buttercups is mediated through the impact of flower heliotropism on paternal and maternal floral environments.’
- ‘The heliotropism itself is an adaptation for survival, the plant maximizing sunlight.’
- ‘All legume plants do this, so be sure to watch your peas and beans for signs of heliotropism.’
- 1.1Zoology The tendency of an animal to move towards light.
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