广西梧州市藤县2019-2020学年七年级上学期期中考试生物试卷
※题型：单选题※知识点：单选题※试题难度：中等<br>下列生命现象或特征,所有的生物都具有的是( )<br>A.自由行动 B.光合作用<br>C.繁殖后代 D.都有细胞结构<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/95302610620e4506ad422e1d41f24560/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/2cf210ff05034e10bf63e54b53519292/D678297FB36C228B22DF03C5F081E906.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>“一猪生九仔,连母十个样”,这句话描述了生物的( )<br>A.变异现象 B.遗传现象 C.生长现象 D.发育现象<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/b9bdd5d006f64f8285a1ad4976e0c572/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/7c275a3ca9f348c38d3642aa98b01b6b/A01B4F50678BC6C6F53E2ABA51C3332A.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>“不经一番彻骨寒,怎的梅花扑鼻来”,引起梅花开花的非生物因素是( )<br>A.温度 B.降水 C.光照 D.食物<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/19573797d419488cbc09af84aa263a8a/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/2a11c8fb23e743eaba16a248023f0e86/556620AFA7A9B7B91909B1B96A86A9CD.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>一个生态系统可以是( )<br>A.一条蛇 B.一只狼 C.一条河流 D.小溪中的鱼<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/50e1c948c9414e31a1babb91560370ff/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/b6c6f5a4741f4fb89955dbd3dfed994b/BC7C1CF3310548598A43AAC2197418CF.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列生态系统中,自我调节能力最弱的是( )<br>A.淡水生态系统 B.森林生态系统<br>C.草原生态系统 D.农田生态系统<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/7acf8395628548ea87498c354aaf071b/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/51008b2e584a4f0db9233ff4745f9892/A9FC60E4747C645E4D3C0218687A40D8.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列食物链书写正确的是( )<br>A.阳光→草→牛→虎 B.草→鼠→蛇→鹰→细菌<br>C.鹰→蛇→青蛙→昆虫 D.草→兔→鹰<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/8169905fb31a48c18313407f10b84a39/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/b35b4b280b2445f395d7a1f2d76a9991/BF07A055C35AA0055F53A207080F27CA.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>生物圈是最大的生态系统。关于生物圈的叙述,正确的是( )<br>A.森林生态系统有“地球之肾”之称<br>B.生物圈的范围包括整个地球<br>C.生物圈是一个统一的整体<br>D.生物圈是指地球上所有的生物<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/42338e5542ef4b60ba0f489c7e472817/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/332b14015de44b6bbe265f8d5d2228ad/0CA4563A6E3A77EC592FDF94A7C3A459.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>使用10倍目镜和40倍物镜,可将物体放大( )<br>A.40倍 B.400倍 C.10倍 D.50倍<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/ef16218365894622bfa019a387092dd3/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/5a6ea54394f443afa894b2eb4644bf26/92E29AA9D05F0272D8BB247377455075.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>如果在显微镜的视野中看到的物像是“d”,实际上字母是( )<br>A.b B.d C.p D.q<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/d0c2152b77d042149016a040a93be274/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/2f970279ee4e4d9da1fb10d4a9aea0fb/A310183C882BF01755F5FC92BE0D90DE.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>显微镜有如下目镜和物镜的组合,要使显微镜的视野最亮,应选取的组合是( )<br>A.5×,10× B.5×,40× C.10×,10× D.10×,40×<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/80b72a37c7c644da9c803df33c35a090/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/772cbd75f113487b8169748e157e71fe/C527F02CA5D90FA5EA93198A78DBAECC.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>结构和功能是相适应的。植物果实汁多为酸味,与之对应的结构是( )<br>A.细胞壁 B.叶绿体 C.线粒体 D.液泡<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/50f1144355144e2a928d4bfb714bba99/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/37d5dfeb7e284400b76f64ba35f8190a/1915037B500BF7E1C3EFF6675F3B027F.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>制作人的口腔上皮细胞临时玻片标本时,首先在干净的载玻片中央滴加的液体是( )<br>A.清水 B.酒精溶液 C.碘液 D.生理盐水<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/81ccf577b25c4122907890defdfe8a74/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/197f1a54a689426b8970dc967b45ab5f/7390A98C68645540452850F33FD926CD.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>如图是动物细胞结构示意图,控制物质进出细胞的结构是( )<img src="https://picture2.zhihuicn.com/testImage/2/2020/10/15/ECC7D79B023D19984F6C4C542E6A7097.png"><br>A.细胞膜 B.细胞质 C.线粒体 D.细胞核<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/57207b809bc045c7a268b80dd0c169a9/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/3c3ccaf1e31b449d84d2d2128c7eed4a/20BA0B0E7AC730AE15ACBC28E049EA4D.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>动物细胞和植物细胞中都有的能量转换器是( )<br>A.叶绿体 B.线粒体<br>C.细胞膜 D.叶绿体和线粒体<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/35465c0a405544bab2c14a2040b73ae6/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/1f8d8426986645ffb3c6a3110ee2fcd0/47F506CF79682E7ADFF44FB71227DD46.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>生物界中的动植物千姿百态,种类繁多,但构成它们结构和功能的基本单位是( )<br>A.细胞核 B.组织 C.细胞 D.器官<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/03b84db6bd674b19987767436c8fa3fe/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/3dcfb815c9b84825bfa44b72eeaa1d7c/A067B8A2155526F2AF28631743B794A3.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>植物的一个细胞经过一次分裂,形成的细胞个数是( )<br>A.1个 B.2个 C.4个 D.8个<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/23e707c064e24f00bd2436a4539bb0a5/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/781b0658c81e4d588d29deb7fa3b4ff2/96866F351CF7676DEBF4F8ECBECC2BC3.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>在人体的四种基本组织中,能够感受刺激,传导神经冲动的是( )<br>A.上皮组织 B.结缔组织 C.肌肉组织 D.神经组织<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/3eff37a045384e54a015a101705a25c9/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/793c90075de14092a6b5f384d5f91bdd/66B3BFD3E8F70D5A023EA72F72A6F622.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>根、茎、叶中能够运输水分和无机盐的导管属于( )<br>A.营养组织 B.分生组织 C.保护组织 D.输导组织<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/ffc7a575f80449798662b6a170e81751/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/66640786b94547808625e44441a26093/9BF1B7ACE49715C20434E1ECEAF67405.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>一朵南瓜花在结构层次上属于( )<br>A.个体 B.器官 C.组织 D.细胞<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/525e9314a32d406f9b2c1795e297cc42/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/62cd95e80c3c45c88fe6a8d5553e0819/D6297DDC8F944C8F7FA6A62E0424E448.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>如图是显微镜结构示意图,请根据题意在“<br>[<br>___<br>]<br>”中填写相应的序号,在横线上填写文字。<br><img src="https://picture2.zhihuicn.com/testImage/2/2020/10/16/1DAF5EAB1682AE625403E95B588C184E.png"><br>1.用显微镜观察植物细胞时,应用眼注视目镜,眼睁开,便于绘图。<br>2.若在视野中看到的物像不清楚,则需调节显微镜的[②],直至物像清晰为止。<br>3.若视野中有一污点,转动目镜污点跟着移动,可判断污物在图中的上。<br>4.如果想观察到的细胞数目最多,你应该选择(选填“低倍”、“高倍”)的目镜及物镜组合。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/5b182448c2a64f59bdf7708f9d57f2b3/C09D9F02CDF3AA6273ABCA782FD7DBE9.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/c6ca3b4adb174e0ab8b47ddc9d4e6a4a/72998565D3A9A5BDCCA9AFFEE4C0FD7F.png"><br><br>※题型：探究题※知识点：探究题※试题难度：中等<br>下面是某班同学设计的“探究影响鼠妇生活的环境因素”实验方案。在实验装置中央放入<br>只鼠妇,静置<br>分钟后,统计明亮和阴暗处的鼠妇数量。下表是全班八个小组实验的结果。<br><tbody><br>组别<br>一组<br>二组<br>三组<br>四组<br>五组<br>六组<br>七组<br>八组<br>明亮处<br>/<br>只<br><br><br>阴暗处<br>/<br>只<br><br><br></tbody><br><img src="https://picture2.zhihuicn.com/testImage/2/2020/10/16/4BBD5BC795FFCEAC8AA5280BED115620.png"><br>1.在研究光照对鼠妇分布的影响时,所进行的除了光照不同以外,其他条件都相同的实验叫作。<br>2.该班同学探究的问题是?实验变量是。<br>3.统计并计算全班各组数据的,这样可以减小实验误差。<br>4.若要探究温度对鼠妇生活的影响,则实验中的变量是。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/a2f5e8ec991c446aa4833f39ee89c810/D369843A1FA7E37C2BFAB5464B74C604.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/2488d416174c4b2a9447e951c5a19867/7021CAEC359757513855766DC8C900C3.png"><br><br>
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