1.春色满园关不住,一枝红杏出墙来。该诗句出自宋代诗人叶绍翁的《游园不值》。诗句大意是:春色是关不住的,尽管园门紧闭,但还是有一枝鲜红浓艳的杏花,冲破樊篱而伸出墙来。从生物学的角度看,这是植物具有的向光性现象。植物为什么具有向光性呢?这与单侧光引起生长素分布不均匀 1. The Spring Garden couldn’t close it, and a red apricot came out of the wall. This verse was derived from the Song Dynasty poet Ye Shaowen’s “The Garden is not worth it.” The general meaning of the verses is that the spring is untenable. Despite the closed garden gate, there is still a bright red apricot blossom that breaks through the fence and sticks out of the wall. From a biological point of view, this is a photopic phenomenon that plants have. Why does the plant have phototropism? This causes unilateral light to cause uneven distribution of auxin.