黑龙江省齐齐哈尔市铁锋区2019-2020学年八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>以下关于胎生、哺乳的叙述,不正确的是( )<br>A.绝大多数哺乳动物以胎生的方式繁殖后代<br>B.哺乳为幼仔成长提供优越的营养条件<br>C.胎生、哺乳大大降低了幼仔的死亡率<br>D.胎生提高了哺乳动物的产仔率<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/5c89ae39ca9942bfb0ce05c6600749d9/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/40d5a0f28eb24568a4e473e410307c56/1E8658C4FA80EF6E1A4F5D19BEA6E232.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列哪组动物都属于鱼类( )<br>A.章鱼、鳄鱼 B.比目鱼、石斑鱼<br>C.娃娃鱼、带鱼 D.中华鲟、鲸鱼<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/4df55179faf94439a105a6fb38e493ff/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/40ae2e9899314fc4b790ceea121b34a3/647694251E0B448DCE12E061DA6FBDD3.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列与家鸽飞行生活无关的是( )<br>A.食量大,消化能力强 B.前肢变成翼<br>C.气囊辅助肺呼吸 D.卵生<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/d080c83c426242b39c3235e36ad91268/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/7e0af44b63f44584b32f642b57a78023/4EAF719CDDB9DFC2CC85987908A54A91.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>蝗虫身体表面包着的能够防止体内水分蒸发的结构是( )<br>A.角质层 B.外套膜 C.外骨骼 D.角质鳞片<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/c220c5830b57463bbe32ba91b80668ca/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/2720b306ef4d4074aa0d1884fecb3ab7/51149CFEE658F3661CBBD529FD710028.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>真正适应陆地环境的脊椎动物是( )<br>A.昆虫动物 B.环节动物 C.两栖动物 D.爬行动物<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/dcdd3ca96d5b4afeab9f66e0b91cb0ca/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/dc2c1283405b480988873f094460514b/E14CC3F22D1D9F0B87EF4AF3C939FE77.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>哺乳动物运动系统的组成是( )<br>A.骨骼 B.肌肉<br>C.关节 D.骨、关节和肌肉<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/b6c88428b95b4e71a2e671d8cbba138b/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/429aecae858b4d62ac93beb27b9859fc/09C681F315B8AE7C1CF35B6F23FF5C81.png"><br><br>※题型：连线题※知识点：连线题※试题难度：中等<br>请将下列无脊椎动物类群与其特征对应起来:<br>(<br>)腔肠动物 <br>A<br>体表有坚韧的外骨骼,身体和附肢都分节<br>(<br>)线形动物 <br>B<br>身体由许多彼此相似的体节组成,靠刚毛或疣足辅助运动<br>(<br>)环节动物<br> C<br>身体表面有外套膜,大多具有贝壳,运动器官是足<br>(<br>)软体动物<br> D<br>身体细长,体表有角质层<br>(<br>)节肢动物<br> E<br>身体呈辐射对称,身体表面有刺细胞,有口无肛门<br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/f1b6dd76473f4c7992547f5a05fcc05f/F48724E962692608148FCD86A9FADD6A.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/385ea35c603c47f8ad35d656e7b5f34c/70634E8754146386AC3A8BA399ECE7BB.png"><br><br>※题型：实验题※知识点：实验题※试题难度：中等<br>我们在学习和生活中,手上难免会沾染许多细菌。甲,乙两同学利用盛有灭菌肉汁蛋白胨固体平面培养基的培养装置,分别进行了细菌培养实验。如图所示:<br><img src="https://picture2.zhihuicn.com/testImage/2/2020/10/10/50735313251F76F06A71746F678256DF.png"><br>1.设计合理的是,理由是。<br>2.将手指按在培养基上相当于过程。A.杀菌 B.接种 C.培养<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/e74f3cc6da394fb489f896d908e86bf4/BF28639B12413D7C64FB5E850C799D45.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/ce12622e8c4947cc86deb7abe667f96f/B6AC0FB74B3B56672AEFD433257BBDFF.png"><br><br>
页:
[1]