hydrotropism
/haɪˈdrɑtrəˌpɪzəm/
noun
- The growth or movement of a plant or other organism toward or away from water.
- Hydrotropism allows desert plants to send their roots deep into the soil to find water.
- Farmers can use knowledge of hydrotropism to design better irrigation systems.
- The experiment demonstrated positive hydrotropism as the roots curved toward the moist area.