甘肃省定西市陇西县2018-2019学年七年级上学期期中生物试卷
※题型：单选题※知识点：单选题※试题难度：中等<br>下列属于生物的是( )<br>A.慢慢增大的钟乳石 B.能开出黄花的生石花<br>C.逐年增高的珠穆朗玛峰 D.腾空而起的火箭<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/fcb17d0a53ee481f8c1d3762cfa25265/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/0bbf94f1b5434c769c49f407fdabb931/CE6BD9905E88617238553CF0C9C8F850.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>按照形态结构特点,可以将生物归为( )<br>A.植物和动物 B.作物、家禽和家畜<br>C.陆生生物和水生生物 D.植物、动物和其他生物<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/a3d91d9ecead45dab3bced4eb9eaae63/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/de2af5cef882497695cd73dfb0bab6e7/D26792F3720A615D144B4B158FEFCD50.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>鼠妇通常在石头和花盆下面生活,主要受哪种非生物因素的影响( )<br>A.阳光 B.温度 C.水分 D.空气<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/d0d81e894dc44486ad77af343e61d6ac/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/3c6c6f84b3d54885960ceb4611351358/B00AA04084A257E4087DE066D249178F.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列属于生态系统的是( )<br>A.树林里全部的植物 B.池塘里所有的鱼<br>C.一片树林 D.草原上的所有生物<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/5b520a2243e343fbaf61396d063f0514/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/94349f910aea42ee829cf8a65729f2ea/EFD72C5125A936719F705185F5B320B8.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>最大的生态系统是( )<br>A.生物圈 B.森林生态系统<br>C.城市生态系统 D.草原生态系统<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/6dbd3964b94640ec98860ca3f7c7ff37/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/26e93f78eebf428bb77557ba8fcee0e3/9A97BFCD96E08B2D5475D21AF6E369E0.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>“人间四月芳菲尽,山寺桃花始盛开”,造成这一差异的环境因素是( )<br>A.光 B.水 C.温度 D.土壤<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/cce3a5e0ce694a5f8730c0280d71c766/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/a3d710f419a04d549c63822795c37e40/36C0698B63E05C1CDC3E22FD3A77918E.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>麦田中小麦与杂草之间的关系是( )<br>A.竞争 B.捕食 C.寄生 D.共生<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/d6f8c8dcd2bd435d9ddb2359c80be9f2/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/bed85360fb39490e9d3c00231a345a3b/C6F31794494DF3CC069A3F6A9D88798A.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>用下列四台显微镜观察洋葱表皮细胞,视野中图象最大的是( )<br>A.目镜40×、物镜50× B.目镜10×、物镜20×<br>C.目镜30×、物镜15× D.目镜15×、物镜25×<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/50af372752634832807bcf225570468b/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/48c4860ae76c485f829e9f3071a98733/AD3471EBF6C830BD5BF09DA130718221.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>如果在载玻片上写一个“P”,在显微镜视野内看到的应是( )<br>A.P B.d C.b D.q<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/350eb7e1b8554b929f372b13899b7417/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/3cbd6a86fc4841b59bb72a4be8cffd47/A1C09D5E15A3C9AEA04D6A7FEB149FF5.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>制作人口腔上皮细胞临时装片,在载玻片中央滴一滴( )<br>A.清水 B.生理盐水 C.葡萄糖 D.盐水<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/d091246f459847009e9c53f58c5c1c1a/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/bcbc433bb1ba43f4a70dd51cdab65713/09E6FB91E2D8B788CD0501F5E1254C3A.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>显微镜的视野中央出现一污点,移动装片和目镜,污点均不动,则污点可能在( )<br>A.装片上 B.反光镜上 C.目镜上 D.物镜上<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/38a2f0bb671e4b08b7020917aa8e5ac7/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/f8d52ebf96154396a56a2473ca512274/D6B31A00D915263F7E0F6991828EC13D.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列哪种结构是植物细胞和动物细胞都具有的( )<br>A.细胞壁 B.细胞膜 C.叶绿体 D.液泡<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/31a16d99aae44f248a9e1bfdb4f8ac2d/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/5622a8d9d6714911b977f8fe2d9a62e7/417DCBAB307D31F239E85F63BD0BD3E1.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>使用显微镜观察时,如果视野中的物像偏右下方,要使物像居视野中央,应将玻片向哪方移动( )<br>A.右下方 B.左上方 C.右上方 D.左下方<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/f1df69d27d16416abfbb038225f72c42/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/e432e3be068142a78921ce7a0fea4b51/FFBE1F4F9E6CA686418385D5CAD42342.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>如果把细胞比作汽车的话,相当于汽车发动机的是( )<br>A.线粒体 B.叶绿体 C.细胞膜 D.细胞核<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/65386e69a0d3464e95b6aebe14218318/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/20e022e3fd234464b4f3b2f2379efe5e/FD19E065E2F1D95EF1548FFDC3047292.png"><br><br>※题型：多选题※知识点：多选题※试题难度：中等<br>以下说法不正确的是( )<br>A.绿色开花植物由六大器官组成<br>B.动物有八大系统<br>C.形态相似、结构和功能相同的细胞群叫组织<br>D.动物和植物细胞结构相同<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/b8b0ce36a6514a9580d7782c95be580f/D18D4D13EAB1C5050787CC6EDF970E13.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/6024d3f7e29e4aae8d38fa881e8bcb8e/0D26E386724E09B717E788704D76FCE3.png"><br><br>※题型：填空题※知识点：填空题※试题难度：中等<br>在进行调查时首先要明确<br>和<br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/3802d18a7421486f8593f620c646e7e3/87CE90BA0341D0F258BF80FE9B96FCB0.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/b83feb79d2a74cd88e634034ad5b2ae9/2ABCD4E34F348C17AF509D2BD6510171.png"><br><br>※题型：填空题※知识点：填空题※试题难度：中等<br>生态系统中的物质和能量就是<br>沿着<br>和<br>流动的。<br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/7c965081b9f240448136e3ec7dbf1b8e/C68F1DF8ED1DCE808E38CCD344C2CCE9.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/e57d0c01f95c4a78800cb09553ca8912/44B48D7469BD10716549CF0647930EE2.png"><br><br>※题型：填空题※知识点：填空题※试题难度：中等<br>生物圈的范围包括<br>的底部、<br>的大部、<br>的表面。<br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/7d5fe1f64bd9411fab6e18a29f121128/F9DF88572EFA44265EB548E2431E1D58.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/6b6b1c4246ff49f09c0b660d0c63d4ca/B87C401FC782822E8DBC328E4F2C0473.png"><br><br>※题型：填空题※知识点：填空题※试题难度：中等<br>显微镜的放大倍数是指<br>和<br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/323b7287a57a4266be0b3c19478455e3/1D0E1FA92085A102F9213A9F25CEC7C1.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/c4fdabf8971e43fb98a3ea537cb6adec/9A3D83C432F471425024FEA212E7481D.png"><br><br>※题型：填空题※知识点：填空题※试题难度：中等<br>显微镜下所要观察的材料一定要<br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/53fd05c1d5674e62a61b969026b556f8/FFE3D5C9315C4EC4F5A182CB64D6D09E.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/efc0ef353cda4f0c935118e7a1f76365/EDB565741009D984E8125C4F59833486.png"><br><br>※题型：填空题※知识点：填空题※试题难度：中等<br>绿色开花植物体是由六大器官组成的:其中的<br>、<br>、<br>属于营养器官;花、<br>、<br>,属于<br>器官。<br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/1d689dd83ecc46cdb2f7f81fbf522daf/6B7D4F4B52898954732119F6489D3DFC.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/95148a5ac991452ea9e91965a13641dc/FD4B1610F33F01CFCD04865398DA11F7.png"><br><br>※题型：探究题※知识点：探究题※试题难度：中等<br>探究“光对鼠妇生活的影响”时:<br>1.作出的假设是。<br>2.该实验中的变量是,在设计实验时,要给鼠妇提供和两种环境,以便对照。<br>3.每个实验装置中放入10只鼠妇,每分种统计一次明亮和阴暗土壤中的鼠妇数目,统计10次,计算10次统计数的值。<br>4.得出的结论是。<br>5.如果“探究湿度对鼠妇生活的影响”,则实验中的变量是,需要给鼠妇提供和两种环境。<br>6.在研究一种条件对研究对象的影响时,所进行的除了这种条件不同以外,其他条件都相同的实验,叫做实验。<br>7.探究实验一般包括六步:、做出假设、、、、。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/77a7669709f44d06bcb2241a8bf1f8a8/1F9F443568C54250688B6225D65C9AC6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/ff15dd887ec842d29941410ef6652713/E7420AD2540858BF581EC5CB0259BD08.png"><br><br>
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