5.1.1腔肠动物和扁形动物第2课时2021-2022学年生物人教版八年级上册随堂小测
※题型：单选题※知识点：单选题※试题难度：较易<br>关于寄生生活的扁形动物,叙述错误的是( )<br>A.运动器官特别发达 B.生殖器官特别发达<br>C.一般感觉器官退化 D.消化器官简单或没有<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/9d785e1bdadf477e961c2c79aad716b2/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/575453e4eba741a6b4aff740cb59f71a/699CB3E6348B1DFB606C136A95F81B94.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/2/9/2018/9163dd1aaa874fad96a0774b14280dc2/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2018/e9b1e42c4229421c9c30f8f56f06bde1/AC4668230DC9FB271C645FD869F676EC.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列哪类动物最先出现两侧对称( )<br>A.原生动物 B.腔肠动物 C.扁形动物 D.软体动物<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/6f983f1d61e34d3d988cf0e43c51523c/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/1a9f9ac404224b4782af57289c578e3e/CE1B2792512459FF8D926C704FF4591D.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>血吸虫病严重威胁着疫区人民的身体健康,预防的根本措施是不接触疫水,因为血吸虫疫水中含有( )<br>A.血吸虫尾蚴 B.血吸虫卵 C.血吸虫成虫 D.人畜粪便<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/22a84981ce0f46cd8438ea421d4cdd49/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/8d557ee04ded4087998fc3cc726a086c/D434DFCA305715CDAA0A1607723188E5.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>下列不是扁形动物共同特征的是( )<br>A.人身体呈两侧对称 B.背腹扁平<br>C.有口无肛门 D.有眼点和耳突<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/08b63347737c48e686cecff567f6ad0f/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/c881ecd726bb41a69ec90c7245f28558/B4469AB52238E069503E1828615CDF5E.png"><br><br>
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