2020-2021学年生物北师大版七年级上册同步实验室（十四）验证植物进行光合作用需要叶
※题型：单选题※知识点：单选题※试题难度：中等<br>张晓明从户外的甲花盆和放在暗室里一昼夜的乙花盆中,各摘下一片天竺葵叶片,除去叶绿素、漂洗并分别滴加碘液;当冲洗掉碘液后,甲、乙两片叶的颜色分别是( )<br>A.甲、乙两叶片都是蓝色<br>B.甲、乙两叶片都是黄白色<br>C.甲叶片是蓝色,乙叶片是黄白色<br>D.甲叶片是黄白色,乙叶片是蓝色<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/d3e89c38a12345e5aab24fd1002ffcc9/D7C9A679F3C72D4F1064B7D0A0FD4AD8.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/7591a46da19e4d4eac887f9ff441d200/8A027A7F976A29D23D8602E644DBF02C.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>韭菜的上端是绿色的,而下端埋在土中的部分是白色的,其根本原因是叶绿素的形成需要( )<br>A.氧气 B.光照 C.土壤 D.温度<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/46dac6f40d56428e9d672971c2698599/4EF59C4461E28F3B3B09551EB8B9AC3F.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/2081d7dca7ae4c29847c4c97c509e37a/FDFFE5FB9BD9642F2719EACD6830844A.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>在同一块地里同时栽培韭菜,栽培在露天环境中,长出的叶片是绿色的;而栽培在遮光环境中,长出的叶片是黄色的。该探究实验说明影响叶绿素形成的生态因素是( )<br>A.水分 B.无机盐 C.光照 D.空气<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/8744bd64a2474dbab71709835fd6eb44/F3FFF02E67737AECAA5F9376DCA7D618.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/23f74532704e4e3b95c1d2bfef722cd1/3BD991EB262379A9F4142D97462BFF7B.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>白萝卜裸露在地上的部分是绿色的,而埋在土里的部分是白色的,说明( )<br>A.叶绿素的形成需要适宜的温度<br>B.叶绿素的形成需要水<br>C.叶绿素只有在光下才能合成<br>D.叶绿素的形成需要土壤<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2014/7290a0c436c74204b90b542c2bd5033b/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2014/93a6f88405a143679c06ec90f8779236/87C5C2BCF348A52D0B1D0E27D55D557A.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>取一片经日光照射了几小时的银边天竺葵的叶子,脱去叶绿素后用碘液染色,结果边缘未变蓝色,其他部位变成蓝色。该实验证明了( )<br>A.光合作用需要光 B.光合作用需要叶绿体<br>C.光合作用释放了氧气 D.光合作用需要二氧化碳<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/6ba84de27e0848fc906a01c8d0b7dd83/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/6570f3c325e546abbcce295fbe08f1de/4EE1928BDE93060E076871275D7994E8.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>在将叶片脱去叶绿素时,将叶片放在酒精中隔水加热的原因是( )<br>A.温度过高会破坏叶绿素<br>B.防止酒精流到外面<br>C.防止温度过高,酒精燃烧,引起危险<br>D.为了更好地脱去叶绿素<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/a435dbd153dc49aab51534a841abb026/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/844c8c3e127d4c3987740e43512d6536/B3E1058466FDBE444B5C85896D5A69EC.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下图是四位同学做“脱去叶片中叶绿素”实验时采用的装置,其中正确的是( )<br>A.<img src="https://picture2.zhihuicn.com/testImage/2/2019/5/16/D6BA4D2B6975A934408D1AA78F9204AB.png"><br>B.<img src="https://picture2.zhihuicn.com/testImage/2/2019/5/16/6A1F4875CD90C44CBE03D71534F2006C.png"><br>C.<img src="https://picture2.zhihuicn.com/testImage/2/2019/5/16/7FF200FB1FB619D79E76FF441376C3D1.png"><br>D.<img src="https://picture2.zhihuicn.com/testImage/2/2019/5/16/51C91B6DC7B65444D4B8A5C745C8F205.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/45f065fa051146caa8fc57d309c302c6/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/f8798a344aab41fbb7af1a5fc28d025b/8055557299FE605A9E9DFE735BDB79D1.png"><br><br>
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