2020-2021学年七年级生物上册苏教版同步课时作业3.5.5植物的开花和结果
※题型：单选题※知识点：单选题※试题难度：较易<br>下列不属于雌蕊结构的是( )<br>A.柱头 B.花柱 C.子房 D.花药<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/fd6535ef11704e9d9f6513ea4c10afb2/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/91188a8bcec149bebab9638dda040f35/E049A85CA10EED746F5260BD451DBD73.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>与果实和种子的形成有直接关系的部分是( )<br>A.雄蕊和花瓣 B.雄蕊和雌蕊 C.雌蕊和花萼 D.花冠和花萼<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/d988b06509034f67a07c210f491011c2/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/66f0458f570a475b88d4641427b24761/A3BC13FD3B789DFF6C2E12DDCDB2AD77.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>如图是桃花的结构示意图。下列叙述正确的是( )<img src="https://picture2.zhihuicn.com/testImage/2/2019/7/18/57990C696FC39425890B48FA8A67CD0D.png"><br>A.⑤将来发育成种皮<br>B.雌蕊由①④⑥组成<br>C.⑥是由花粉管萌发形成的,内有卵细胞<br>D.②中的花粉散发出来落在①上的过程叫传粉<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/5ad4bd92f0ad49aabbe0c4802c37254f/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/533ecd10781e48aba7841aca69c1fb84/FD61B2A24EE6A0C45029C403E747529A.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>一朵鲜艳的桃花中最主要的部分是( )<br>A.花冠 B.花萼 C.雌蕊和雄蕊 D.花柄<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/e966925b8ff3400b8752dcdd1faa3233/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>“麻屋子,红帐子,里面住着个白胖子”,这是描写花生的谜语。发育成“麻屋子”的结构是( )<br>A.花瓣 B.子房壁 C.胚珠 D.花托<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/03d84682339a487eba0d820780a0969b/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/ba1fbd82ef994efdb39eb99cef584dac/8A9C11846370A7BA6883FB5337597B1C.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>我们吃的下列农产品中,属于果实的是( )<br>A.西瓜子 B.玉米粒 C.芝麻 D.大豆<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/7a2efe13f4ba455f921559b82066554a/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/d55bb6691ee94e5c948126e710a5c7f9/8FE544F621AC335F4A41C09CF6FE7087.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>如图是被子植物桃花的结构示意图<br>请据图<br>回答问题<br>:<br><img src="https://picture2.zhihuicn.com/testImage/2/2016/8/9/A155029362DCB12AD114DA4ED19B4A56.png"><br>1.花中最主要的结构是由①②构成的和由④⑤⑥构成的。<br>2.果实和种子的形成必须经过和两个生理过程.此后,受精卵发育成,它是新植物的幼体。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2016/1e63b12142c14cbe9311e098e1b9642c/FB61D7EEF2E5F583E86E1333FE832FC9.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2016/4513684e6d324718b78df5b75fab1d9e/2C810B86FF925E9C4D81B1860359E20B.png"><br><br>
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