2019-2020学年人教版生物八上课课达标 5.1.2线形动物和扁形动物
※题型：单选题※知识点：单选题※试题难度：较易<br>下列动物出现有口有肛门的是( )<br>A.海葵 B.涡虫 C.蛔虫 D.血吸虫<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/77883e6a1015481a89c5a40adaa78cb7/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/32262c8971f54e809742a1766296c12f/86478BABAD7EC8DD58AB676EF7220578.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列动物不属于环节动物的是( )<br>A.<img src="https://picture1.zhihuicn.com/2/E4639B5926E2EE35F3C9ABD057350FCE.png"><br>style="VERTICAL-ALIGN:middle"><br>B.<img src="https://picture1.zhihuicn.com/2/93FC373EA6FD4F94A10C55697401E978.png"><br>style="VERTICAL-ALIGN:middle"><br>C.<img src="https://picture1.zhihuicn.com/2/1D79824341A77DED5B9D46B89224EEFB.png"><br>style="VERTICAL-ALIGN:middle"><br>D.<img src="https://picture1.zhihuicn.com/2/3F2B589CE227E21A917DBF5A1655CA8F.png"><br>style="VERTICAL-ALIGN:middle"><br>答案<br><img src="https://picture1.zhihuicn.com/Answer/2/9/C6DD893B0461FAD877175A7ECBBD5939.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：较易<br>蚯蚓的身体是由许多彼此相似的体节构成,下列动物与它的特点最相近的是( )<br>A.蛔虫 B.蝗虫 C.沙蚕 D.线虫<br>答案<br><img src="https://picture1.zhihuicn.com/Answer/2/9/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture1.zhihuicn.com/Explain/2/9/0E86E2910C256BE3020E7529296A23A8.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>分析蛔虫结构示意图,回答问题:<img src="https://picture1.zhihuicn.com/2/BC2340DF7BAD2C757D1E0BA7D950EEEC.png"><br>style="VERTICAL-ALIGN:middle">1.体表包裹着一层密不进水的,它对蛔虫的寄生生活有何意义?<br>2.消化管结构简单,但是有了,成为完全消化管,2仅由一层细胞构成,可以消化小肠内的食糜.<br>3.[]发达,生殖能力强;没有专门的运动器官,只能依靠身体的弯曲和伸展缓慢的蠕动.<br>答案<br><img src="https://picture1.zhihuicn.com/Answer/2/9/24E6534DAF02129AB0922F4697D33E95.png"><br>解析<br><img src="https://picture1.zhihuicn.com/Explain/2/9/D61446E7824EC70BD0F3594FDC630D81.png"><br><br>
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