Chen Chin-yuan, a graduate student in the department of horticulture at National Taiwan University, says that flowers close up to make it easier for the plants to control their inner circulation of water, so as to avoid being affected by the weather, the humidity or even being touched by people.
研究睡蓮的台大園藝所研究生陳沁源說，植物的開合，是因為身上運作順利的水份，受到外界天候、乾濕度、甚至人的碰觸等干擾後的反應。