题目内容

用红光(R)和远红光(FR)交替照射处理莴苣种子,观察对种子萌发率的影响,结果见下表。从以下实验数据可以得出:()

A. 红光促进莴苣种子萌发
B. 莴苣种子萌发需红光和远红光交替照射
C. 远红光促进莴苣种子的萌发
D. 红光的促进作用可以被随后照射的远红光降低

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