Which statements describe hydrotropism? Check all that apply. Hydrotropism is a plant’s response to light.Hydrotropism is a plant’s response to an external stimulus.Hydrotropism causes cells to grow longer on one side of the roots.Hydrotropism causes cells to grow longer on one side of the stems.Hydrotropism causes a plant to grow toward light.Hydrotropism causes a plant to grow away from light.