2020-2021学年七年级生物上册人教版同步课时作业2.1.1练习使用显微镜
※题型：单选题※知识点：单选题※试题难度：中等<br>显微镜是生物实验中重要的观察工具,下列关于显微镜的说法正确的是( )。A.光线暗时用平面反光镜<br>B.观察的材料应薄而透明<br>C.用餐巾纸擦拭镜头<br>D.放大倍数越大视野中细胞数目越多<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/615acf2652154e44b79654084aa2bb5f/76900E09FAB5EBA344B8EA84E844FF07.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>下表是显微镜使用过程中要达到的目的和所采取的操作,其中能达到目的的是( )。<br><tbody><br>选项<br> 目的<br> 操作<br>A<br> 调节光线强弱<br> 转动细准焦螺旋<br>B<br> 调换不同倍数的目镜<br> 转动转换器<br>C<br> 使物像更清晰<br>转动遮光器和反光镜<br>D<br>使视野左上方的物像移到视野中央<br>将装片向左上方移动<br></tbody><br>A.A B.B C.C D.D<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/7f0ea05a54894132a1b1348b3c92be86/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/5c4ee5ee2e46498fba5e2d534472b9be/4B3DF3B32B1C595781404F07F8065527.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>姗姗在观察人的口腔上皮细胞装片时,换高倍镜后,口腔上皮细胞不见了(如下图)。最可能的原因是( )<img src="https://picture2.zhihuicn.com/testImage/2/2019/11/12/9AF4F548BF6672D787F55CBEB5D41F24.png"><br>A.没有调节反光镜<br>B.没有调节细准焦螺旋<br>C.没有调节粗准焦螺旋<br>D.没有把物像移到视野中央<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/d7f4f879ec38458487a733d4c709b122/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/97128a67be5d46ba9e2c7e85da00a6f1/CF66D34CE0AD8AB4596EC5BEAD4EF757.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>如图表示一个用右手写字的人正在用显微镜观察,其中观察方法正确的是( )<br>A.<img src="https://picture2.zhihuicn.com/testImage/2/2020/5/14/7C1CE7835AF7A7AFAD01C3B211A51B4E.png"><br>B.<img src="https://picture2.zhihuicn.com/testImage/2/2020/5/14/07747B75F663227D4AC1D6D9C743FE1E.png"><br>C.<img src="https://picture2.zhihuicn.com/testImage/2/2020/5/14/242DAE63EEB153A0E58CC627211840E4.png"><br>D.<img src="https://picture2.zhihuicn.com/testImage/2/2020/5/14/05ED0AE49A0850FD3B32E7CF86827157.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/2a932b30fd0044ac969bbeabb25e1a4a/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/c0812e7fc1eb4cc484822c887cf19ddd/AF9D728E9028BB078664DCCB42BB3151.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>显微镜是人类探索微观世界不可缺少的工具。下列关于显微镜的使用,正确的是( )<br>A.当环境光线较暗时,用反光镜的凸面镜<br>B.对光完成时,应观察到明亮的圆形视野<br>C.在下降镜筒过程中,眼睛应该看着目镜<br>D.清洁收镜时,使用纱布擦拭物镜、目镜<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/29522a82b8d14cf08ab7a678a84fc8e4/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/f96c627c978e43c58f284717d1e6d374/993FB680893575D56877354D6A69F996.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>用下列四台显微镜分别观察洋葱鱗片叶内表皮细胞,视野中细胞数量最多和视野最暗的分别是( )<br><tbody><br>显微镜序号<br>目镜<br>物镜<br>甲<br>5×<br>40×<br>乙<br>10×<br>40×<br>丙<br>10×<br>4×<br>丁<br>15×<br>10×<br></tbody><br>A.丙、甲 B.丙、乙 C.乙、甲 D.乙、丙<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/0e6c0e1f76674d56844e4271c3913d02/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/4e89566b79cb4d7a9665547dfaf82266/6704522DB0DBF0AA60166E9BD4B77CFF.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>某学生在实验中使用显微镜,他用的目镜倍数是5倍,要把观察的材料放大200倍,他应该选的物镜倍数为( )<br>A.10倍 B.20倍 C.40倍 D.100倍<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/9a9e83b7ca444cd6ba3295372d92277c/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/85cb266faad2470db930155e1ee8605a/8EEE9B965B94953FA30948BE4D070AD1.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>以下图示为光学显微镜的相关结构示意图和快速判断“污物”位置的方法概念图,观察到的细胞数目最多的组合和图中2代表的结构分别为( )<img src="https://picture2.zhihuicn.com/testImage/2/2019/10/23/D55709ADF259117D50F77BF4E3454B7A.png"><br>A.②③⑤、物镜 B.①③⑤、目镜<br>C.②④⑥、物镜 D.①④⑥、目镜<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/b6cd1ee8153f470eb77d3841fec687d2/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/c679ab5dec8f4404ba1e640f450df6ed/2D76266B3ABE9C60C86815CFA4D1CD1A.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>要使显微镜视野内看到的细胞数目最多,则应该选用目镜与物镜的组合是( )<img src="https://picture2.zhihuicn.com/testImage/2/2019/9/9/C8E281E887B84DCAE419ADFFD92F569D.png"><br>A.①③ B.①④ C.②③ D.②④<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/28213518d460411eb4accfbf458c717d/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/5437e58c4d7b45d2a6bca2217e503417/0373EC71CA7918A93F6E9DC4357529E4.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>林刚同学在用显微镜观察叶表皮细胞的临时装片过程中,其视野如图所示,把物像移动到视野正中央的方法应该是( )<img src="https://picture2.zhihuicn.com/testImage/2/2019/9/20/239F17F23871D6EC4BEBA1460D4E7737.png"><br>A.把装片向左上方移动 B.把装片向左下方移动<br>C.把装片向右上方移动 D.把装片向右下方移动<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/73d934f294894d60a45d1c8f2084e9cf/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/91a3c86e9def4264af4a008272e130f8/090FA3280F462E6BD9A21AD5CB02C4A6.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>在观察草履虫的实验中,图一表示显微镜视野中草履虫的运动方向,要想对它进行跟踪观察.应将图二载玻片向什么方向移动( )<img src="https://picture2.zhihuicn.com/testImage/2/2019/9/2/C625AE8ED7F3F0F086B6C95BA6F47EB9.png"><br>A.A B.B C.C D.D<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/b7fd00b54c0c4cef8be035451e1501ee/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/9cb6b1f52ec6497aa6457990741e03c4/77FCE74579E500F2C453CE232FF77E25.png"><br><br>※题型：读图填空题※知识点：读图填空题※试题难度：中等<br>如图是显微镜结构图,下表是目镜、物镜的放大倍数,<br>请据图<br>回答:<br><img src="https://picture2.zhihuicn.com/testImage/2/2019/6/29/D8D1BCABF45EB21F46677B2326A762ED.png"><br><tbody><br>编号<br>目镜放大倍数<br>物镜放大倍数<br>第<br>组<br>5×<br>10×<br>第<br>组<br>5×<br>40×<br>第<br>组<br>10×<br>40×<br></tbody><br>1.在使用显微镜时,要想视野内出现的细胞数目最多,则在表中应选择目镜、物镜的组合是。2.若在视野内看到了“N”,则玻片标本上的原图是。3.当光线较暗时,用反光镜的(平面镜/凹面镜)来对光。4.在显微镜下观察人血永久涂片时,想让观察到的血细胞体积更大,可转动使高倍镜对准通光孔。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/b34935b3375d4e45a71231378da36cf5/5FD4E46AEDE4E8FD3A7FEA92E8797F07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/2bbdefa205a2457896f3ff4049bd6de9/01B39638AD888FE7AFDE93E87BFCFDF2.png"><br><br>
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