2021-2022学年人教版八年级生物上册课课考点通：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：中等<br>下列动物中,身体不属于辐射对称的是( )<br>A.<img src="https://picture2.zhihuicn.com/testImage/2/2021/7/23/44419D23EF478F46A274D015AADAADDA.png"><br>B.<img src="https://picture2.zhihuicn.com/testImage/2/2021/7/23/934ECF8CB9D5119DDEE368C42F8E8687.png"><br>C.<img src="https://picture2.zhihuicn.com/testImage/2/2021/7/23/CEBC41E80ACBC0BAB1957A83B3C72F4C.png"><br>D.<img src="https://picture2.zhihuicn.com/testImage/2/2021/7/23/5305560F512EBE65958A9AB1EA1EF845.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/b9c4f6ccf9ba44b992b65a357581c3f0/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2021/60771ec0ac8b4a1c96332b7c496e44f8/1CE0B777B8261F64EC0D185195AD0D3C.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,与其他三种属于不同类的是( )<br>A.<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/24/EE5CF59ECA822870F0F3B784758E22C5.png"><br>B.<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/24/29CC2C1D2C6AEA8D5036F76628BA2D7F.png"><br>C.<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/24/F3F58C8FF08D1D9EBCF3D5B9453BBDFE.png"><br>D.<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/24/8DF71DC46D01A70995FDF2AC4B57B741.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/9b074e5985984fd7b140b38f7cd5db3e/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2021/977c067f27164fb79fca48c0111a04a2/FB8EE659DA0A848C733089B7D241301D.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列哪项不是腔肠动物的主要特征?( )<br>A.体表有刺细胞 B.身体呈辐射对称<br>C.身体呈两侧对称 D.有口无肛门<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/22daf8ae4f174b49a5e2b3fc7e1e2d6d/06CA09E70C17EF8BA2D3B8C70D693953.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>身体两侧对称是从哪一类动物开始出现的( )<br>A.单细胞动物 B.腔肠动物 C.扁形动物 D.节肢动物<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/b8c9eea6c14545b2b6b0cfa00bc5330a/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2021/8e8547ee388d47dbb7e53e65a405112c/A4D1AF001774205FBE0EA6CA530DB22D.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>在岳麓山的一条小溪的石块上,人们发现了一种小动物。它们像一片柳叶,背腹扁平,头部呈三角形,背面有两个黑色眼点,腹面处有口。请判断,这种动物属于( )<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/bf0d6cefc526489fb3e963f0617e497a/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/1c3564fb146141288423f0879efdd527/98A74353BF073E262BBD66DD65E2C62E.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>如图涡虫和水螅都有口无肛门,但它们却分别属于不同的无脊椎动物类群。这两种动物的主要区别是( )<img src="https://picture2.zhihuicn.com/testImage/2/2020/10/22/BE718B2D9C100DE1065E37C69E466840.png"><br>A.身体呈两侧对称还是辐射对称<br>B.是单细胞还是多细胞<br>C.身体有无分节<br>D.体表有无外骨骼<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/3bc039d79e894ede8a69e580f3ed0aca/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/46141cd590854ef8bec4137485ed7714/0CD51B46EF75A27225398E23F87E9839.png"><br><br>※题型：读图填空题※知识点：读图填空题※试题难度：中等<br>观察下列水螅和涡虫的结构示意图,回答问题。<br><img src="https://picture2.zhihuicn.com/testImage/2/2020/9/16/E75E2C84A5C7D1054DB429F119A85732.png"><br>1.图是水螅结构示意图。水螅属于动物,身体呈对称。<br>2.图乙中所指的一面是该生物的(选填“背面”或“腹面”)。<br>3.这两种动物共同的特征是。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/ba93bda23f874e20ab7889340d6a36d0/41EEFDD94B200B8D69A5A5C3E9566964.png"><br>解析<br>略<br>
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