2020-2021学年八年级生物人教版寒假提前学（1）植物的生殖
※题型：单选题※知识点：单选题※试题难度：中等<br>有关嫁接的叙述,错误的是( )<br>A.方法有枝接和芽接<br>B.接穗和砧木的形成层应紧密结合<br>C.属于有性生殖<br>D.能保持植株的优良性状<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/8a1db85c05284ad695bd4f033db6fb42/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/2366b5277a524a00b9844337427a03f8/9988AD0F5EE3828BF1ACC803B18B51E6.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列属于有性生殖的是( )<br>A.<img src="https://picture2.zhihuicn.com/testImage/2/2020/10/9/C1008176053415D021284BCDFC59CA89.png"><br>B.<img src="https://picture2.zhihuicn.com/testImage/2/2020/10/9/9908C44106140FD13C8E6B55B80178D5.png"><br>C.<img src="https://picture2.zhihuicn.com/testImage/2/2020/10/9/1568909EB0CA551D34AD192CAB7DFC1B.png"><br>D.<img src="https://picture2.zhihuicn.com/testImage/2/2020/10/9/063B60555141F38D34F8DCD9FE034919.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/7a7fa43e599f46848d3fedec5dba18ad/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/37bc7c2db5ca4865bbf3d4585009ebb4/4EF5089E6D097FD5ECD5A1178A57C8BE.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>一位果农采用某种方法,让一株苹果树结出两种不同口味的苹果。他采用的繁殖方式是( )<br>A.嫁接 B.扦插 C.压条 D.组织培养<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/22f2683f2698494680ae512c74988879/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/33b77d94223a49e09533fa8847990e2c/B4A58BD40BE12EF8946BF5791EC49DB0.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>进行压条时,要预先把枝条埋进土里的部分划破树皮,有利于____,从而促进生根。( )<br>A.积蓄营养物质 B.吸收无机盐<br>C.吸收水分 D.吸收营养<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/471e77b3b180438da6e8a29fd528f1f0/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br>略<br>※题型：读图填空题※知识点：读图填空题※试题难度：中等<br>如图是一些植物的繁殖方法,<br>请据图<br>回答问题.<br><img src="https://picture2.zhihuicn.com/testImage/2/2019/6/21/956B58E693CAD2DBA46BA4DCA7C37EB8.png"><br>1.<br>图<br>A<br>中①、②的结构名称依次为<br>、<br>,能否成活的关键是<br>是否紧密地结合在一起。<br>2.<br>下列分别属于无性繁殖中的什么方法?<br>A<br>B<br>C<br>3.<br>上图<br>D<br>是马铃薯的繁殖方法,由图可以判断马铃薯可以通过<br>进行繁殖,这种繁殖方式属于<br>(选填有性或无性)繁殖.无性繁殖与有性繁殖最主要的区别是<br>。<br>4.<br>假设图中①是黄花月季枝条,②是红花月季,该技术完成后,①和②分别长出一枝条,请问①长出的枝条开<br>花(答红或黄),②长出的枝条开<br>花。<br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/e16965b74651480698a5eb2770b3f61b/8A09C52F06A893806844DB21E0ED86F7.png"><br>解析<br>略<br>
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