20.如图所示为两类种子剖面结构图据图回答1在图2所示的玉米种子的剖面上滴一滴染液变成蓝色的部分是e胚乳.2图1示菜豆种子 Template




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tomski20.如图所示为两类种子剖面结构图据图回答1在图2所示的玉米种子的剖面上滴一滴染液变成蓝色的部分是e胚乳.2图1示菜豆种子 coloring