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葱为什么会有白、绿两部分
葱之所以会有白绿两部分,主要归因于光照对植物生长的影响。 具体来说,葱的白色部分(葱白)和绿色部分(葱绿)的形成机制如下: 光照影响叶绿素的合成 叶绿素是植物细胞中负责光合作用的绿色色素,它能够吸收太阳光的能量,将二氧化碳和水转化为植物所需的能量物质 ...
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