辽宁省大连市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>下列关于两栖动物的叙述,正确的是( )<br>A.幼体生活在水中 B.成体只生活在陆地<br>C.幼体用肺呼吸 D.成体用鳃呼吸<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/70be43a0ae804795813fb75281b7e7be/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/856efb871ffd43c28d76d0675a408924/49708A3B269510C9AA8576FA3901D85A.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列动物中,学习能力最强的是( )<br>A.蚯蚓 B.蜘蛛 C.导盲犬 D.大山雀<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/1a105c6f16324748804e520f50424c46/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/227669280fd540e39b00b90e1012693a/D2C52CC2E57B5D9A5668F50FDFACE0BE.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>生态平衡是指生态系统中各种生物的种类和所占的比例( )<br>A.逐渐增加 B.逐渐减少 C.保持不变 D.相对稳定<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/7c551b1881c94d44b69d5dee25912a4d/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/c90f72fc453044b8aee92086cae43e25/E954B956B55738B7A579F65FCDAA0D91.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>按照蝗虫所属类群进行排序,由大到小依次为( )<br>①动物②脊椎动物③无脊椎动物④节肢动物⑤环节动物⑥昆虫类A.①②④⑥ B.③①⑤⑥ C.①③④⑥ D.③⑥①⑤<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/d87ac84e9cce4ca390b603757ca210d1/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/1eccc9e7cf074a3a827efadd21c8d78c/D505A9281896DB5A950E2E85CE0968F0.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列属于陆生脊椎动物共同具有的特征是( )<br>A.体表都被毛<br>B.卵外都有坚韧的卵壳<br>C.都具有四肢<br>D.生殖和发育都摆脱了对水环境的依赖<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/0f7fba30d8964bd497163e42fc4e26ba/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/7832b23a5b4044c4a4228b3171fe85eb/AE61D1F3EB1D2BCE66E20876E6B31D16.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>“海阔凭鱼跃,天高任鸟飞”。下列选项不是家鸽与飞行生活相适应特点的是( )<br>A.前肢变成翼 B.有些长骨中空<br>C.身体呈流线型 D.通过产卵繁殖后代<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/01b399617c5249af891210d8ba4aad28/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/cb534ac9949e47acb40bad3d35b10cde/B2CE8CF887E0B76307429BD139C2805E.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>某果农发现果园内有许多昆虫,于是喷洒农药将昆虫全部杀死,但这一季节果实产量却是历年来最低的,这是因为昆虫能帮助植物( )<br>A.光合作用 B.传粉 C.受精 D.传播种子<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/a5da5c9baae94563a30c57ed46e160be/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/58620be667514a459537bf8566485876/CB51F2ACEF60C8083962CE03BDD4E94B.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>中华鲟生活在水中,用鳃呼吸,用鳍游泳,说明中华鲟属于什么动物( )<br>A.鱼类 B.两栖类 C.爬行类 D.哺乳类<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/89e3842dd3f74a4d9d62a269383be663/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/da516218016f4744bfdfe7e983545d7b/582EC32905E20E33F99F51B410A1F8E9.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列动物的结构与其功能对应错误的是( )<br>A.狼的犬齿﹣﹣适于磨碎食物<br>B.鱼的鳃﹣﹣适于在水中进行体交换<br>C.青蛙的后肢﹣﹣既能跳跃也能划水<br>D.鸟的龙骨突﹣﹣可扩大胸肌的附着面<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/9b5c2193acc147d8832afb0bdcf206b4/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/8164775232dd4a53a568620abae8b2f3/7937E965F5BBAB18A95BC6E712800826.png"><br><br>※题型：填空题※知识点：填空题※试题难度：中等<br>动物与植物的主要区别是:大多数动物都能自由运动,但动物细胞没有细胞壁、<br>等结构,所以动物不能像植物那样自己制造<br>,只能靠摄取食物生活。<br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/3e2e931309b149a7b3c717305178a73b/7B608753F9423605CCA54F5A9314E128.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/4f934f25534c47be82a120b912307052/E260D7883B0A11EA7DDBB184DAC3EA89.png"><br><br>※题型：填空题※知识点：填空题※试题难度：中等<br>龟既可以<br>在水中游泳,也可以在陆地上生活,但却不属于两栖动物,而属于<br>动物。这是因为龟体表覆盖角质的甲,用肺呼吸,在<br>(水中<br>/<br>陆地)产卵,卵表面有坚韧的卵壳。<br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/83af01e7509249f1a1264b5ce09a1455/4672680233894C79E370976545B7C77D.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/dac427a951ff4a13b517ac13fec9547c/9E19B644C30B0D84A63AD481ED2856E1.png"><br><br>※题型：填空题※知识点：填空题※试题难度：中等<br>蜈蚣、蜘蛛、<br>蝉这三种<br>动物中属于昆虫的是<br>。昆虫需要定期蜕皮,因为昆虫身体上的<br>会限制昆虫的发育和长大。<br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/9f32300231a34f578730211d596114eb/A03DEC91F7FCF839E462C7F068133E06.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/bea7c4ef162e42d0b525d3eba36bbdc3/7CEBAFEED5CA7BD9DA027CEBA7E0F46F.png"><br><br>※题型：连线题※知识点：连线题※试题难度：中等<br>请将中间一列动物名称与左、右两侧该动物运动方式、运动器官用直线连接起来。<br><img src="https://picture2.zhihuicn.com/testImage/2/2020/10/29/433E31208C6B106DBEC5871A5BBF40E1.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/ce0891bdeacb4c659b5713b086a3a7e0/BDFC627448FDBEE5ECD95093A8CC1281.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/a827115933db4c65bf563b523c2c1afd/F73E3CDCCB43FCE063088C5DB24853B4.png"><br><br>
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