photoperiodism

pho.to.pe.ri.od.ism

n.（名词）
【复数】 pho.to.pe.ri.od.isms 也作 pho.to.pe.ri.o.dic.i.ties
The response of an organism to changes in its photoperiod, especially as indicated by vital processes.
光周期现象：生物在暴露于阳光期间对变化产生的反应，尤指通过生物过程显示出来的反应