pituitotropism

例句：

1. 1. The plant's pituitotropism is a result of the light it receives.
   这种植物的向光性是它所接收到的光的结果。
2. 2. This research will help us understand the underlying mechanisms behind pituitotropism.
   这项研究将帮助我们理解植物向光性背后的机制。
3. 3. Pituitotropism is a fascinating phenomenon that has been observed in various plants.
   向光性是一个令人着迷的现象，已经在各种植物中观察到。