phototropic
/ˌfoʊtəˈtrɑpɪk/
adjective
- Tending to grow or move toward or away from light, especially in plants.
- In a dark room, a phototropic plant will bend toward even a small crack of light.
- Sunflowers are phototropic, turning their heads to follow the sun across the sky.
- The phototropic response of seedlings helps them find the light they need for photosynthesis.
Synonyms