hydrotropism是什么意思？

Roots tend to grow towards water in a soil, they show positive hydrotropism.根的生长倾向于有水的土壤, 表现出正向水性....

hydrotropism的音标：hydrotropism的英式发音音标为：[haɪ'drɒtrəpɪzəm]hydrotropism的美式发音音标为：[haɪ'drɒtrəˌpɪzəm]...