2020-2021学年北师大版八年级上册生物课堂小测6.19.1人的生殖和发育
※题型：单选题※知识点：单选题※试题难度：中等<br>全面二孩政策实施以来,想要二孩的爸爸们纷纷远离烟草。因为烟草中的尼古丁能杀伤大量精子,降低受孕率。产生精子的器官是下图中的( )<img src="https://picture2.zhihuicn.com/testImage/2/2019/4/23/D7CB84D29432F16A4673AFBABA4B4BB4.png"><br>A.① B.② C.③ D.④<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/52f6954e23ea42a3ba5ba91140902181/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/46fba414234443baa6217187b40e03de/22340F5848FF2A5AA970A5D1783DE14E.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下图为女性生殖系统示意图,胎儿发育的场所是( )<img src="https://picture2.zhihuicn.com/testImage/2/2020/8/3/E9AEA2A1795E067ADF2D6F63C1C376A5.png"><br>A.① B.② C.③ D.④<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/5a10896637a441a99991a9a991f49351/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/dd1531275de543c98095af3ce5154905/53BF7EDCE21DB9056248E20902A857FA.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>胎儿与母体进行物质交换的结构是( )<br>A.输卵管 B.子宫 C.阴道 D.胎盘<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/8fac772f7a734706862feadc6c382cef/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/91671078bcaa4436946540b4a7550525/3CB63D759303A6913903460957F73E9A.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>下列关于胎儿从母体获得营养物质的途径的表示,正确的是( )<br>A.母体→脐带→胎盘→胎儿<br>B.母体→胎盘→脐带→胎儿<br>C.胎盘→母体→脐带→胎儿<br>D.脐带→母体→胎盘→胎儿<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/02045ac2856440feb5c4dc41542c6783/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/ed44c424b86e4f01904081f6fef5076f/C02552FEA15871D60E27132583B6E057.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列各种生理变化中,不属于第二性征的是( )<br>A.女性骨盆变得宽大 B.生殖器官发育<br>C.男性长出胡须 D.男性声调变低沉<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/ac6f52cf57eb4e16a4d1a408db667b45/4EF59C4461E28F3B3B09551EB8B9AC3F.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/9699d334663a4c1980cfdf408df3983b/A3A8309360FE40B1B625DCB2A461FC5C.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列关于青春期卫生保健的认识,错误的是( )<br>A.月经期间抵抗力下降,应注意保暖<br>B.遗精是不正常的生理现象<br>C.保持乐观向上的心态<br>D.积极参加体育锻炼<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/3f82674e2ac7421bbec79016dc15d8d6/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/e758780ef91549dd8757cfe84fbded78/E687F2ACC5A0E76E1E9A4E744DA930A3.png"><br><br>
页:
[1]