第5单元 第一章（1~3节）2021-2022学年人教版生物八年级上册单元易错题速练
※题型：单选题※知识点：单选题※试题难度：中等<br>水螅的体壁构成是( )<br>A.中胚层和外胚层 B.内胚层和外胚层<br>C.三层细胞 D.一层细胞<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/86e629de48604cc499df2f044b8755fe/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2021/e12a104fa4334c69932b0a4fb4822611/D4920629130C7F00A3E8879C27EB94B1.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>水螅在营养条件好的环境下,主要进行的繁殖方式是( )<br>A.有性生殖 B.分裂生殖 C.出芽生殖 D.孢子生殖<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/7cf20b6838734f0288f032094acf64fb/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2021/9c74a5ed2fd64030a8e4d0fa89dd6350/E396D62D10FADB0F104B6D4A45E1214B.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>湖北素有“千湖之省”之美誉。近几年,有些地方曾经销声匿迹的血吸虫又有死灰复燃之势,我们应引起高度重视。感染血吸虫是因为( )<br>A.吃了不干净的食物 B.接触疫水<br>C.接触血吸虫病人 D.空气传染<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/52f4aa86b5174c1a938fba3325913cff/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2021/ea28ca72d45d470aa5f5771a4b43b231/697932DC3C17FBEF7A79CDAFBCFFC4D4.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>下列动物都具备消化腔,且有口无肛门的一组是( )<br>A.蝗虫、蚯蚓、蛔虫 B.水蛭、海蜇、涡虫<br>C.水母、海蜇、水螅 D.沙蚕、血吸虫、珊瑚虫<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/cd3ba1e389c044598f57a94a267f7499/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/ee7f1525443343ac905dd5491833d561/52122F2ACC373CFD7A758F45F3F12E29.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>蛔虫在人体的小肠内不会被消化的原因是( )<br>A.蛔虫能躲避消化液 B.蛔虫体表细胞更新快<br>C.蛔虫生殖能力发达 D.蛔虫体表有角质层<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/8910a4985e654f6abd66b13540e511de/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/5ca194aa34fb498794aeaff604d63cff/2D91223A1E77F2EC88318C03F5255B97.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>在下列蛔虫的形态结构特点中,哪项是不属于适于寄生生活的( )<br>A.身体呈圆柱形 B.体表有角质层<br>C.生殖器官发达 D.消化管结构简单<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/031dbfc85e9d4ccd8d75e371f6958abb/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/6924b36f46f141ad9997bc5638f44316/4338C1944B44FAD2B19A60EE81E9B181.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>小刚得了蛔虫病,营养不良,体弱消瘦。蛔虫是什么生物,蛔虫与小刚之间的关系属于( )<br>A.软体动物、捕食 B.线形动物、捕食<br>C.软体动物、寄生 D.线形动物、寄生<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/aeeeb3e3e1874434b2209638a762a536/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2021/e15d26d834b748358200aee457a7a68f/9B7762234EF4A5ECB16BE755C465DADE.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>动物的进化,常伴随着一些重要特征的出现。以下最先出现体节分化的是( )<br>A.腔肠动物 B.扁形动物 C.线形动物 D.环节动物<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/80ae724dd3734ffaaa7a4973272dcc90/D9A7E0722DAB5479A60928D5B8864BC6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/ca5eb5e5b4ac4392bb14d3a3cd671832/AA573763B41ED46B93BF75496F56A58C.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>蚯蚓的体表总是湿润的,这有利于蚯蚓( )<br>A.进行呼吸 B.在土壤中运动<br>C.吸收营养 D.保持水分<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/d2cc26259fbd4396847db0f5626546d3/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2021/72f4d8231b90416eb9dcd1d7cf1e4026/5D9D7C3A73F8E12DE77DB97B33BFFA04.png"><br><br>※题型：单选题※知识点：单选题※试题难度：容易<br>蝗虫身体表面有坚硬的外骨骼,其主要作用是( )<br>A.防止体内水分散失 B.控制身体生长的速度<br>C.扩大活动范围 D.对寻找食物和配偶有利<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2014/73fe6acf24cb48148e7416c9e606ae5f/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2014/f15b9be1a06b40fa92ab62c110e7fa95/CE6C8D127F50DCA9D7737B93BA617B1B.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>蜘蛛和虾都不是昆虫,但是却和蝉、瓢虫属于同一类动物,其主要原因是( )<br>A.都用气管呼吸 B.都能用足运动<br>C.都适应陆地生活 D.体表都有坚韧的外骨骼<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/651828ca540a467e9f4d59a7212a3c61/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2021/d6e90f05d2f943ada6b5744a1fe72f15/581B7ABA850D5FA0AAD19E9DD68F2B6B.png"><br><br>※题型：单选题※知识点：单选题※试题难度：容易<br>很多昆虫在生长发育过程中有蜕皮现象,这是因为( )<br>A.昆虫体表的外骨骼能保护和支持内脏<br>B.外骨骼可以防止体内水分蒸发<br>C.外骨骼非常坚韧<br>D.坚韧的外骨骼不能随昆虫的生长而生长<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2012/2ab0eacd566c4458ae3e8a2cf65f6867/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2012/873055e5009048b386a8954fa984dc28/B3E6C1F98371CFFAD47B059AB413EF82.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列动物与其相对应的特征,匹配错误的是( )<br>A.蝗虫——身体和附肢分节<br>B.水螅——辐射对称,有刺细胞<br>C.涡虫——背腹扁平,有口有肛门<br>D.河蚌——身体柔软,有外套膜<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/6b3d581b257b47f4b1e1d0084a2ec93d/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2021/122ae9276025408b98c82d39254d99f1/DD2442EFF540D343334B26138E7BE371.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>表中关于几种动物的特征叙述,错误的是( )<br><tbody><br>选项<br>动物<br>特征<br>A<br>珊瑚虫<br>身体呈辐射对称,体表有刺细胞<br>B<br>蛔虫<br>身体呈两侧对称,有口无肛门<br>C<br>血吸虫<br>没有专门的消化器官,生殖器官特别发达<br>D<br>螨虫<br>体表有坚韧的外骨骼,身体和附肢都分节<br></tbody><br>A.A B.B C.C D.D<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/75bd782fc1324d7a80b797ced71a654b/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/ece6b943206140109926f8f15c2f01b3/260851A1D010A67FD8591EEDAF9CB0F0.png"><br><br>
页:
[1]