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1.为了确定某种矿质元素是否是植物的必需元素,应采用的方法是(A)检测正常叶片中该矿质元素的含量(B)分析根系对该矿质元素的吸收过程(C)分析环境条件对该矿质元素吸收(D)观察含全部营养的培养液中去掉
問題詳情
1.为了确定某种矿质元素是否是植物的必需元素,应采用的方法是
(A)检测正常叶片中该矿质元素的含量
(B)分析根系对该矿质元素的吸收过程
(C)分析环境条件对该矿质元素吸收
(D)观察含全部营养的培养液中去掉该矿质元素前、后植株生长发育状况的影响
參考答案
答案:D
難度:適中0.5
統計:A(0),B(0),C(0),D(0),E(0)
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