2020-2021学年生物北师大版七年级上册同步实验室（二十八）观察种子萌发时的形态结构
※题型：单选题※知识点：单选题※试题难度：较易<br>小悦观察到,花生种子萌发时最先突破种皮的是( )<br>A.子叶 B.胚芽 C.胚轴 D.胚根<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/bb40f1fa1de54d0f8cc6fb46ae4aeb38/D9A7E0722DAB5479A60928D5B8864BC6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/7aa901821dea4a2c882054247f5978de/45E85FD11CFFD8240B52EF0DEEB9678D.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>如图是菜豆种子萌发的过程图,由图可知种子萌发时,最先发育的是( )<img src="https://picture2.zhihuicn.com/testImage/2/2020/8/17/4E90D5A273E335AA158E16DADA8AA7A6.png"><br>A.胚芽 B.胚根 C.子叶 D.胚轴<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/06eceb417d2c42eca87416768aebd5fe/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/3c472cf20c1a4268b646bd4345d359ce/BCDAF1E5FC8F67B8C029C3DF6850A55D.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>如图中,大豆种子萌发时最先突破种皮的是( )<imgA.① B.② C.③ D.④<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/6ad95fe97b72465d83583c51d2e37ab4/CB10E80A5A739A58F1312BA12F379467.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/2646a256a6cc4cee969b80d74775c522/D2BFA7C9A25EA91CCC9946E55E3682AD.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>在菜豆种子的结构中,能发育成幼苗的茎和叶的是( )<br>A.胚根 B.胚芽 C.胚轴 D.子叶<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/f57fdabf043f4e20ab3315ff5821a396/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/2ffd941a1083433f9979212bfefd07ea/EFA9E0CD4158E322133F945CA79A2490.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>如图为菜豆种子结构和种子萌发后的幼苗形态示意图,下列叙述正确的是( )<img src="https://picture2.zhihuicn.com/testImage/2/2019/8/8/AB7B0BB4A72F1F8CB3ED5032EE27367D.png"><br>A.图甲中②③④⑤组成种子的胚<br>B.图甲中的①发育成图乙中的⑧<br>C.种子萌发过程中结构⑦逐渐变小<br>D.结构⑧的生长只与分生区有关<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/3c4f97bc198c4cf89b1517135c9a6f71/D7C9A679F3C72D4F1064B7D0A0FD4AD8.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/086d57aacd3d4e9db157d67f127f886d/A99015524521B448B1BD2CD1A4379B71.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下图甲、乙分别为大豆的种子结构和幼苗示意图。甲图中能发育成乙图中③的是( )<img src="https://picture2.zhihuicn.com/testImage/2/2020/7/10/BBF4F171039AD013E51386AEEAF4488F.png"><br>style="VERTICAL-ALIGN:middle">A.① B.② C.③ D.④<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/494374f7b3ec45fa90b0215b575c83ed/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/6e36c9bdd3f64bd0bc5acdbae52799f4/5B50B890C31A693195494CE3FAE2CC0F.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下图是菜豆种子的结构和萌发过程示意图,下列说法错误的是( )<img src="https://picture2.zhihuicn.com/testImage/2/2019/6/26/04F102CB3004F7090796F221A16EE2AF.png"><br>A.甲图种子最先萌发的是②,它将发育成乙图中的⑧<br>B.甲图中④是胚芽.能发育成乙图中的⑥茎和叶<br>C.⑤是子叶,它的功能是为胚的发育提供营养<br>D.甲图中①是果皮,对幼嫩的胚有保护作用<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/4da8c5d926b64b1684a0d86c1b14626b/D9A7E0722DAB5479A60928D5B8864BC6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/4f8dcdff48b8496297b5339db32d0106/73F3EEDC1EEDE806197B7F4918C34A4E.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>下<br>图为菜豆幼苗和菜豆种子的部分结构示意图,据图回答:<br><img src="https://picture2.zhihuicn.com/testImage/2/2020/8/8/D87C497582C8E869C7424A1186752CFF.jpeg"><br>1.图中2是。<br>2.首先突破种皮的是(填标号),将来发育成。<br>3.在菜豆种子中,[]是新生植物体的幼体。<br>4.菜豆种子的[]发育成,它在发育过程中所需的营养主要来自[]。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/e4606d27cb264b90aacb56ad72d598be/647EB583118AC41766FD020B01D3EE8A.png"><br>解析<br>略<br>
页:
[1]