2020-2021学年人教版八年级上册生物课堂小测5.1.1 腔肠动物和扁形动物
※题型：单选题※知识点：单选题※试题难度：较易<br>具有“身体呈辐射对称;体表有刺细胞;有口无肛门”这些主要特征的动物类群是( )<br>A.腔肠动物 B.扁形动物 C.线形动物 D.软体动物<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/b3e5b64c3e294fe58623981c6fa3d2ea/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/36c04f4099ad4854a32891cf31147199/BBF689D568AA90897FD70CFD21BB5F97.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列动物不是腔肠动物的是( )<br>A.珊瑚虫 B.水螅 C.海葵 D.涡虫<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/7977d2a3b20c478fb2caf75c71c8ddc1/D9A7E0722DAB5479A60928D5B8864BC6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/738e52da7e374271b8b1d4548fade784/9E388FCB6DDD9FE4C5DBBABDD3AF097D.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>下列生物属于扁形动物的是( )<br>A.蛔虫 B.珊瑚虫 C.绦虫 D.沙蚕<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/2161fd5491624ae3bba78c8e9529d240/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/446deb5177544223bf0ef2f79025aec3/C4FABF631A9D899383DFF150F091607E.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>涡虫等扁形动物的体形是( )<br>A.左右对称,背腹扁平 B.辐射对称,左右扁平<br>C.左右对称,上下扁平 D.不对称,梭形<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/7dd5d9c907724d9c9f8ffc6826c42acb/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/91dfee7bb5b64166a228284e5d9a5ded/AC4668230DC9FB271C645FD869F676EC.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>如图所示动物可生活在蛙类的膀胱中,它的身体扁平,不分节,肠道只有一个开口,没有外骨骼。图中的动物属于( )<img src="https://picture2.zhihuicn.com/testImage/2/2019/5/8/69213951D8E7A2435BF5FD61ABDF3094.png"><br>A.扁形动物 B.线形动物 C.腔肠动物 D.环节动物<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/4b1735428f664c2ab7b5a83b076be9b5/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/4ee55c86d65f4621a71d4d3edee142d5/15FC6EF715731C4E8B245ED1E2BD6080.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>扁形动物的主要特征不包括( )<br>A.身体背腹扁平 B.有眼点<br>C.有口无肛门 D.身体呈左右对称<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/733165651f614000a8029d993b8779f8/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/042e26c218bc4820bc0e26d0a96585c0/6A0DE6BD3F64BF0A4396460936D10A9E.png"><br><br>
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