2020-2021学年八年级下册生物苏教版同步课时作业（1）生物的无性生殖
※题型：单选题※知识点：单选题※试题难度：较易<br>“有意栽花花不发,无心插柳柳成荫”,描述的柳树的生殖方式为( )<br>A.有性生殖 B.无性生殖 C.分裂生殖 D.孢子生殖<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/b78f80c43ccc47c49afc3bbc6355b60e/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/dbfbe9174d124d66b2222c1b34131d50/BF884034F03A498AC586C0669288A0B6.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列获得新植物的方式,不属于无性生殖的是( )<br>A.小麦种子繁殖 B.苹果和梨嫁接<br>C.马铃薯块茎繁殖 D.月季枝条扦插<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/84100bda855048d78643664973f4cb1b/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/7e26632ce62945a88a4d4aef5d5978c2/4E1CB3D5EF99EC2C9AB857B543F67E2D.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>绿色开花植物能够利用其营养器官繁殖新个体,这种生殖方式叫做( )<br>A.分裂生殖 B.出芽生殖 C.孢子生殖 D.营养生殖<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/32e26af6007846aaa7e1391614908995/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/0bd8183b67b8474186540fc637897b27/CF6D6D1E840304D8601013110A1B915C.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>西瓜的根系不耐寒,在16℃?18℃时停止生长,而同属胡芦科的南瓜根系耐寒能力较强,为了使两瓜提前上市,瓜农常将西瓜幼苗(去掉根部)接在南瓜苗(去掉上部茎叶)上来繁育西瓜,这种繁殖方式叫做( )<br>A.扦插 B.嫁接 C.压条 D.组织培养<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/8c351ee7c80a493dadf65333e4eec8bd/CFD11B39D2C70E3BAFF53A76B86BA12A.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/7741f5ac111d4a8c813ab9f415833f2e/6AFA74E202DD94339C71EE73A751BFFA.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>梨、苹果、桃等果树都是利用嫁接来繁育优良品种的,下列与此繁殖方式不同的是( )<br>A.兰花的组织培养 B.蚕豆的开花结果<br>C.马铃薯块茎繁殖 D.竹节上的芽形成新的竹笋<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/e325f70c47be48c2bc571ed4ff5037e8/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/2ea22147a04e4534ae438633af1dcc7a/2919F5FCBDC597A368A3E137C01F7BD5.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>将红色山茶花作为接穗,嫁接在白色山茶花上,开出的花是( )<br>A.红色 B.白色 C.粉红色 D.有红有白<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/d8bc939220c24c12ac987c0d94960703/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/ccc7192c3a5549d9ba7a9114f061bf5f/BC50503B6DBCA0634783709889C0024C.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>看操作步骤示意图,分析回答:<br><img src="https://picture2.zhihuicn.com/testImage/2/2020/12/24/2B531EDF5EEE44C979EE50EDF46138CC.png"><br>1.如图是生产实践中常见的方式,属于生殖,发育起点不是。<br>2.①称为;②称为。①与②结合时,要让它们的紧密结合,以确保①的成活。若把柿树枝接到黑枣树上,最终结出的果实是。<br>3.另一应用,植物组织培养技术的优点是和。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/34f0e7afdf464920ba4ec34c78576e49/BEC60C0FA20FD2A323191A336E54DBF2.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/f7a6017b58ae4d67bc62680429e6d07f/3DA09738CF1AC4E102BDC8D81DA5A954.png"><br><br>
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