3.2.1根的生长2021-2022学年生物冀少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>根尖生长最快的部位是( )<br>A.成熟区 B.分生区 C.伸长区 D.根冠<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/42c72e5c07a946d4ad5558df6bf79394/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/d4b9b3101833465b8d2cdbbf874bb347/436DC9F67674C732D79EF06239A53A02.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>如图所示分别为植物根尖四个组成部分的细胞结构图。其中有很强的分裂能力、属于分生组织细胞的是( )<br>A.<img src="https://picture2.zhihuicn.com/testImage/2/2013/10/22/2020F08848B8C8D8B26226FF52BF8DAE.png"><br>B.<img src="https://picture2.zhihuicn.com/testImage/2/2013/10/22/9577157B2B1768B77202B0D8B8534C7E.png"><br>C.<img src="https://picture2.zhihuicn.com/testImage/2/2013/10/22/A496259CBFABBDA3835C75048CA32975.png"><br>D.<img src="https://picture2.zhihuicn.com/testImage/2/2013/10/22/A33C5C9F544866FC917635441736F1C6.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2013/c9c76e9a2d8e47d0b3b651ae3fe92498/4EF59C4461E28F3B3B09551EB8B9AC3F.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2013/4e498ccbdfb0431388c5527781ec46cc/2872010520D2336C7BB8CBC23F31462D.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>如图是某学生在探究根的哪一部分生长最快时,第一天绘制的根尖各段长度图。请你预测生长最快的一段是( )<img src="https://picture2.zhihuicn.com/testImage/2/2015/10/16/4BE89602CFC3886D46842379ED1C69FF.png"><br>A.① B.② C.③ D.④<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2015/2040a786ee4c4dcca5ea941f3088f957/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2015/c5d23c4102874a138419c4ea9aa47594/6518FC445B083C7603ECEA7523698F9D.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/2/2021/6/25/4184A842499EA250328124AD90AE98A8.png"><br>A.生长最快的部位是④<br>B.③的细胞有很强的分裂能力<br>C.②的细胞逐渐停止分裂,开始迅速伸长<br>D.根尖是幼根生长最快的部位<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/076d0db3726442318d7ae2333f459e39/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2021/8d940da9fab94dac826f90a4b0580cd4/063AB62957A7796A83DC4792503DB0E5.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>观察根尖的各部分示意图,回答下列问题<br>:<br><img src="https://picture2.zhihuicn.com/testImage/2/2020/7/15/4853FD5AF00C4B8EBFB536A4CCAC155A.png"><br>1.从根的尖端到生有根毛的一段,叫作,是根生长的主要部位。<br>2.[]细胞较大,形状不规则,排列不整齐,具有作用。<br>3.根的长度不断增加,是因为[]细胞数量的增加和[]细胞体积的增大。②生长到一定程度就会变为①。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/8f4c7f230ba74eb293c88c553c438b8a/E23A5A40736C6286E80FA273DD9A6901.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/91c95fecbaf44c3a9e25e1c8296c51ce/F2E7162C0829EAC60DBE58C371590B87.png"><br><br>
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