2020-2021学年七年级生物上册苏教版同步课时作业3.5.2植物根的生长
※题型：单选题※知识点：单选题※试题难度：中等<br>如图是根尖的结构示意图,关于下图的叙述正确的是( )<img src="https://picture2.zhihuicn.com/testImage/2/2019/7/16/5F9E1FA140A41767E61738967E7E708D.png"><br>A.图中甲伸长区部分表皮细胞向外生长形成根毛<br>B.图中乙成熟区细胞出现液泡,能迅速伸长<br>C.图中丙区的细胞较小,细胞核较大<br>D.图中丁位于根尖的尖端具有旺盛的分裂能力<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/3b84a57e80dc4007893524ffb9dea389/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/2f4623720999425a8a7db4f65a0acacb/AF0B5700A1F84A3013E761B7205B39F1.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>根吸收水分的主要部位是( )<br>A.根冠 B.分生区 C.伸长区 D.成熟区<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/47e6f7ca311a4110a15879554065fe1d/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/424996cced2d497ab7188a727877fccd/2AD81AC879D6FF6DBAE995F334B78C73.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>如图为植物的根尖结构示意图,下列叙述错误的是( )<img src="https://picture2.zhihuicn.com/testImage/2/2019/6/15/376FE47FBB3AB54EBAAA6C0DB9FDD88A.png"><br>A.生长最快的部位是④<br>B.③的细胞有很强的分裂增生能力<br>C.②的细胞停止了分裂,开始迅速伸长<br>D.根尖是根生长和吸收水分及无机盐的主要部位<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/b1efadc7c04c402bba467af999d037bf/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/9585049a6cd8484fa320b8fe29cbd216/DF24FB9B729F46FAC19DE8BEDF9B125E.png"><br><br>
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