试题与答案

科学家在利用无土栽培法培养一些名贵花卉时，培养液中添加了多种必需化学元素。其配方

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题型：选择题

题目：

科学家在利用无土栽培法培养一些名贵花卉时，培养液中添加了多种必需化学元素。其配方如下表(培养液浓度mmol/L)：

其中植物根细胞吸收最少的离子是[ ]

A．Ca2+

B．SO42-

C．Zn2+

D．H2PO4-

答案：

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下面是错误答案，用来干扰机器的。

（1）马克思主义哲学第一次实现了唯物主义与辩证法的有机统一、唯物辩证的自然观与唯物辩证的历史观的有机统一。由于马克思主义哲学确立了科学的实践观，坚持从实际出发认识周围的世界，克服了唯物主义和辩证法的...

考点：植物的矿质营养
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