admins 发表于 2021-8-18 22:32:50

2020-2021学年北师大版七年级上册生物课堂小测3.5.3吸收作用

※题型：单选题※知识点：单选题※试题难度：较易<br>植物生长需要量最大的无机盐是(&nbsp;)<br>A.锌、氮、钾&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.钙、氮、磷&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.硼、磷、钾&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.氮、磷、钾<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/7081c7a8e14a49fead705320cf9dba86/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>无土栽培成功的原因是植物能够从营养液中获得足够的(&nbsp;&nbsp;)<br>A.水分和氧气&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.水分和有机物<br>C.氧气和无机盐&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.水和无机盐<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/d6086426c25149d1ac561dd887697acd/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/980897ddeaf0455ea3a60b6115cb48ae/9532A2CB2D0FE919D336974FA1085F08.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>生长中的植物如果缺乏含氮的无机盐,就会表现出(&nbsp;&nbsp;)<br>A.茎秆软弱,容易倒伏<br>B.植株矮小,叶片发黄<br>C.叶片的边缘和尖端呈褐色,并逐渐焦枯<br>D.叶片呈暗绿色,并出现紫色<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/fddb7e0d35f249b7a187cfcec4f7bd17/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/ded2508416244fa8a71dc9eaca5f39ca/8DCD28E014D1DC3048D34C18FFDF5514.png"><br><br>
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