首页 › 专项卷 › 黑龙江省齐齐哈尔市龙沙区2019-2020学年八年级下学期期中考试生物试卷

admins 发表于 2021-8-18 22:40:35

黑龙江省齐齐哈尔市龙沙区2019-2020学年八年级下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：较易<br>下列哪项不是生物的特征(&nbsp;)<br>A.生物的生活需要营养<br>B.生物能对外界的刺激作出反应<br>C.生物都是由细胞构成的<br>D.生物能排出体内产生的废物<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2015/109aae6eb3c24d09825f5557df762bc3/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2015/1096d174233a45e589526bb987f2b4b5/567839B1C79E965722F00D0618FB3888.png"><br><br>※题型：单选题※知识点：单选题※试题难度：容易<br>下列不属于一个生态系统的是(&nbsp;)<br>A.一片森林&nbsp;&nbsp;&nbsp;&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.一条河流<br>C.一片农田里所有的植物&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.一块草地<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/60c826ad55c04976adc252780f547aad/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：较易<br>人体精子和卵细胞结合成受精卵的过程发生在(&nbsp;)<br>A.阴道&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.输卵管&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.子宫&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.卵巢<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2015/cd264eb24f19408d8210c98b3a067fc8/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2015/3d8412f01cb04405afccd7148779fc79/13169770B6E8A2C953E5498534475358.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>在人体的血细胞中,呈两面凹的圆盘状的是(&nbsp;)<br>A.血浆&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.红细胞&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.血小板&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.白细胞<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/1c7a6597cdce4212bbdea05d1950dd87/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：较易<br>区分脊椎动物和无脊椎动物的主要依据是体内有无(&nbsp;)<br>A.脊柱&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.体毛&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.肺&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.肌肉<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/2bcf931d97324070b5b99b6efc1779fd/E7F0EDF83F40244C8F0C84B97471AED6.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>鲫鱼在水中游泳时的动力主要来自(&nbsp;)<br>A.胸鳍和腹鳍的摆动&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.所有鳍的协调作用<br>C.尾鳍的摆动&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.尾部和躯干部的摆动<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2015/d077a484952449f6aa37fb23d445cdb2/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2015/e418ded6da0f48eca2bbf07536dde913/9FCBF44C871155099EACB6EDB87382DE.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下面关于人体血管和血液的叙述,不正确的是(&nbsp;)<br>A.血液流经肺时,由静脉血变成动脉血<br>B.动脉血管里流的都是动脉血<br>C.动脉血管将血液从心脏送到全身各处去<br>D.毛细血管壁只由一层上皮细胞构成<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2016/acfa42972e424046ab4e13d3f4b2af14/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2016/d6c00bdd685245548f39b98da43ad03d/AE627A15D132F9EBCB41E589E6D3BFB7.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>肾脏形成尿液的基本单位是(&nbsp;&nbsp;&nbsp;)<br>A.肾小管&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.肾单位&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.肾小囊&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.肾小球<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/f4e1c72d6f7746c7a84ffba33bbc17bb/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/f29eba3dfb5b4863bd053df0c43acf6a/CA899BA8402EA06A4ED54F305AC21DA8.png"><br><br>※题型：单选题※知识点：单选题※试题难度：容易<br>用显微镜观察玻片标本时,放大倍数最大的一组是(&nbsp;)<br>A.5×、10×&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.10×、10×&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.5×、40×&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.10×、40×<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/5c1507d9f8ec4086825afb49e1dfb5dd/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>蝴蝶是由“毛毛虫”变成的。在生殖和发育过程中,“毛毛虫”是(&nbsp;&nbsp;&nbsp;)<br>A.卵&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.幼虫&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.蛹&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.成虫<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2013/07503636d45f49d7a1fa8b28b49d21c0/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2013/2d485e9f38fe4846b32da997f57eb7f8/52BC238932ECE2A9C7200F1CE76DECDC.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>比较法是学习生物学的常用方法,以下是小瑞同学整理的部分植物类群知识,下列说法正确的是(&nbsp;)<br>A.藻类植物都是单细胞水生植物<br>B.石花菜和葫芦藓都有根茎叶的分化<br>C.贯众是国家一级保护的裸子植物<br>D.藻类植物苔藓植物属于孢子植物<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/b64c71bdac1a4263820a7b87bb40ed28/01A39E48B8A67989A23F6887F26FCC64.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>一粒种子能够长成参天大树,小鱼可以长成大鱼,这与细胞的哪些变化有关(&nbsp;)<br>A.细胞生长&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.细胞分裂<br>C.细胞病变&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.细胞分裂、生长和分化<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/12c27a0ef8ff4e9a917c0b8cb67a4304/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：较易<br>为了防控新冠肺炎的传播,我们出门时要佩戴口罩,这种措施主要属于(&nbsp;)<br>A.控制传染源&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.切断传播途径<br>C.保护易感人群&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.增强免疫力<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/d6360fca3162469b9795636bc46ef266/76900E09FAB5EBA344B8EA84E844FF07.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>植物光合作用的原料是(&nbsp;)<br>A.二氧化碳和水&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.二氧化碳和无机盐<br>C.水和无机盐&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.光和叶绿体<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/755b9b78f2064695b3f62df45593c0da/E7F0EDF83F40244C8F0C84B97471AED6.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>下列不属于单细胞生物的是(&nbsp;)<br>A.流感病毒&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.酵母菌&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.大肠杆菌&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.草履虫<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/805fe9ebd2d842ea87ec8aaf105347d5/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：较易<br>下列各组性状中,属于相对性状的是(&nbsp;)<br>A.豌豆的黄粒和圆粒&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.玉米的高茎和豌豆的矮茎<br>C.果蝇的红眼和白眼&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.狗的长毛和卷毛<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2013/76c5ec654a7949398ad7a6f1b62ce038/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2013/c4dd6a0e958741468483c9c9e2a1da57/31B01B923AF7C9BF29934CB6FA2DA4B4.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>呼吸系统吸进的氧气进入人体后,最终要送达(&nbsp;)<br>A.心脏&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.肺&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.血液&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.细胞<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2015/aa425b869b3147da8b56bbf09898d9f5/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2015/c944e3a3e882413b89613046596dde7d/ABEE8B8D1072E785218D1AF850B228ED.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>医生在给病人输液时,针刺入的血管是(&nbsp;)<br>A.主动脉&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.毛细血管&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.静脉&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.体动脉<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/679fdd6c9b274e43bd1be9f32b6bdcf1/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/a40b1a159fad46e4a44cd66127ade2a5/2BA387C8A995E132115252461E0A13DA.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>人呼出的气体和吸入的气体相比,成分的变化是(&nbsp;&nbsp;)<br>A.氧和二氧化碳都不变&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.氧减少,二氧化碳增加<br>C.氧增加,二氧化碳减少&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.氧和二氧化碳都减少<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/c69591ffd6044598ad94078101a25ed7/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/a59cad1d8ba74d8abc7a1a010cf3b879/D4272DE84D98905F9C042493E40CE48F.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>处于生长发育时期的青少年以及伤病员需要多吃的食物是(&nbsp;)<br>A.含糖多的甜食&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.富含蛋白质的食物<br>C.谷类食物&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.含脂肪多的食物<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/ee2a1a38b42946aca3ad86efd5caefe7/76900E09FAB5EBA344B8EA84E844FF07.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>某生物的体细胞中含有8对染色体,在细胞分裂后形成的新的体细胞中染色体的数目是(&nbsp;)<br>A.8条&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.16对&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.8对&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.4对<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2015/6f49ecc6bb4941c8ac9ff34cf40bcac6/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2015/e9a5555270d349608b9697241c2a4aad/7476E29303DD1618292EB4C84755AA62.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>生活在人的肠道内的某些细菌可以帮助我们消化人体内很多无法消化的东西,合成人体所需的一些维生素,这类细菌与人体的关系是(&nbsp;)<br>A.共生&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.寄生&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.捕食&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.竞争<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/e09872054ec143b987760b9c1f44f1d5/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：较易<br>肝炎患者怕吃油腻食物的主要原因是(&nbsp;&nbsp;&nbsp;)<br>A.油腻食物气味太大&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.从小养成的习惯<br>C.体内脂肪过多&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D.胆汁分泌不足,影响脂肪消化<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2015/76beffe5cc104d38b7cac05803bd9429/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2015/72decdc0bc5749ed9b2e096ad552cecf/0A8652CB2FB6944E863C6E93076487E2.png"><br><br>※题型：连线题※知识点：连线题※试题难度：较易<br>请将泌尿系统中的部分结构与所具有的功能连接起来。<br><img src="https://picture2.zhihuicn.com/testImage/2/2021/1/5/5CE8A8C9962714D2B72B3F564FC1733F.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/8464d85ca0df4bd7b6a9bb619fbe9347/B790F8B6E242FA8130CF3CC9ACA8A117.png"><br>解析<br>略<br>※题型：连线题※知识点：连线题※试题难度：中等<br>请将下列发酵产品与相应的细菌或真菌连接起来。<br><img src="https://picture2.zhihuicn.com/testImage/2/2021/1/5/8D6C3B02897810E50E6525460D78DD2B.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/8a1ad06e3b754cc9a04e6d577e63a456/AB2EF37FE612EF4FCDD9227EE4DE7FCD.png"><br>解析<br>略<br>※题型：实验题※知识点：实验题※试题难度：较易<br>在<br>℃<br>的温度下,某同学进行了探究种子萌发的实验,下图是他的实验装置。<br><img src="https://picture2.zhihuicn.com/testImage/2/2021/1/5/DF802A998F93786913E7F0E581AF9BB0.png"><br>1.此实验中,能够萌发的种子是号种子。<br>2.该实验结果可信度小,容易出现偶然性,是因为。<br>3.你认为种子萌发需要的外界条件是:适宜的温度、和。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/a17fa363c10646f4895b70ca47ec4224/78D9A04B7CE18416953C5D83CB826C9E.png"><br>解析<br>略<br>※题型：实验题※知识点：实验题※试题难度：较易<br>根据<br>“<br>绿叶在光下制造有机物<br>”<br>的实验回答问题<br>:<br><img src="https://picture2.zhihuicn.com/testImage/2/2021/1/5/AAAE83B039B0ADB529B43B5C1E5B5946.png"><br>1.将所选的生长健壮的叶片,用不透光纸从上下两面遮盖住一部分(如图所示),其作用是。<br>2.滴入碘液后,图中叶片的(填“遮光”或“未遮光”)部分变蓝,其原因是该部分进行了作用。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/e6821ae2375543d494d34994abd961ce/367ECD95A7E23003610994988D047237.png"><br>解析<br>略<br>※题型：实验题※知识点：实验题※试题难度：中等<br>甲瓶装萌发的种子,乙瓶装的是等量的煮熟的种子,把甲乙两瓶放到温暖的地方,<br>小时后,观察蜡烛在甲乙两瓶中的燃烧情况回答问题:<br><img src="https://picture2.zhihuicn.com/testImage/2/2021/1/5/A862B0B3F6432F314AD29132D2BE07D7.png"><br>1.实验现象:蜡烛伸进甲瓶,蜡烛伸进乙瓶。<br>2.实验结论:。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/9e4188e52d75416b93f89360cc356fc9/AAC2C3FA518458BBC304532A35617F2D.png"><br>解析<br>略<br>※题型：读图填空题※知识点：读图填空题※试题难度：中等<br>结合下图回答下列问题:<br><img src="https://picture2.zhihuicn.com/testImage/2/2021/1/5/69DE056182A8D43802C3E93CD8B45AC1.png"><br>1.有些被子植物开的花,艳丽芬芳,主要是为了吸引昆虫完成。<br>2.受精时,花粉管中的精子和胚珠里的卵细胞结合形成,它就是下一代新生命。<br>3.图中序号是果实,它是由发育而成的,图中序号②是由胚珠发育而成的。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/6f50072a9e274da183337583ad764b25/0BE83EB80ACFEDA6AD9626F2B6DBC483.png"><br>解析<br>略<br>※题型：读图填空题※知识点：读图填空题※试题难度：中等<br>根据转基因超级鼠的诞生过程分析:<br><img src="https://picture2.zhihuicn.com/testImage/2/2021/1/5/C7126B3FD0B16CDADFFA6B2AF3458560.png"><br>1.转基因超级鼠的获得说明性状和基因之间的关系是。<br>2.该实验研究的性状是,控制这个性状的基因是。<br>3.转基因超级鼠体型上与亲代有差异,在生物学上称为。<br>4.图中显微注射器将受精卵注入雌性小鼠,最终受精卵在小鼠的内发育成新个体。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/4a0dbf6316cc47409aa8d20c1bdd6fdb/E30A34E46E7AA43D39D2B94443668E77.png"><br>解析<br>略<br>※题型：读图填空题※知识点：读图填空题※试题难度：中等<br>下图是细菌和植物细胞结构示意图,<br>②<br>是细胞膜,请根据图回答:<br><img src="https://picture2.zhihuicn.com/testImage/2/2021/1/5/86EB4CE76CA4C6F09ADC46B7BEAC0F6D.png"><br>1.图是细菌结构图,从外部形态分析,该细菌属于菌。它的生殖方式是生殖。<br>2.甲图中生物都是细胞个体。<br>3.细菌体内没有,大多数细菌只能利用现成的有机物来生活,并把有机物分解成简单的无机物。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/53298d5bd16c47c49d61a62979b90d0d/2C577168604BBBF3BD5AB623FA150BA5.png"><br>解析<br>略<br>※题型：读图填空题※知识点：读图填空题※试题难度：中等<br>结合呼吸系统组成图回答问题:<br><img src="https://picture2.zhihuicn.com/testImage/2/2021/1/5/F8B69B8F0AA773BF9553F70478E6977A.png"><br>1.写出图中下列几个结构名称:;。<br>2.呼吸系统的主要器官是。<br>3.呼吸道除保证气流通畅外,还能使到达肺部的气体温暖、、。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/198d174d0181494eaba8750ecc9b78d3/55AA1E4AD1DBD971D47E208985682B6E.png"><br>解析<br>略<br>

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