2020-2021学年生物北师大版七年级上册同步实验室（三十三）解剖和观察花的结构
※题型：单选题※知识点：单选题※试题难度：较易<br>一个完整的生态系统结构应包括( )<br>A.生物群落及其无机环境<br>B.生态系统的成分,食物链和食物网<br>C.能量流动和物质循环<br>D.群落中生物的垂直结构和水平结构<br>答案<br><img src="https://picture2.zhihuicn.com/answer/1/9/2019/fe252988ee494898a2575c306d68ab84/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/1/9/2019/6107109d8fc2405984af24daeba5addd/F3CFFAD55EF82EF879CB60443BDAB052.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>一朵桃花的某一结构被虫吃掉,这朵花结不出桃子,这一结构是( )<br>A.花托 B.花瓣 C.雄蕊 D.雌蕊<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/b9be22e76c234176bc6343cd10c8bbfe/D9A7E0722DAB5479A60928D5B8864BC6.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>花中最重要的结构是( ) <img src="https://picture2.zhihuicn.com/testImage/2/2019/6/26/50745FED5AB1988CF2E78137052F1C5E.png"><br>A.②③ B.①⑤ C.④⑤ D.①⑥<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/d6e99bc6f3094ff5ac4ef2b156931651/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/5cc1047465a64e8fa595e21500ba4d72/874569D4B20583A1CB87F700CA06BB81.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>一朵桃花的一种结构被虫吃掉,这朵花就结不出桃子,这种结构是( )<br>A.花萼 B.花蕊 C.雌蕊 D.雄蕊<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/4b91d047d5f24a6fb46230a8a6b0060a/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/dcbd6d8ebdf443f68fb6ba4a71e5b49d/0FE7B638D352D3E1CF5A802443A3B6F7.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>看图回答下列问题:<br><img src="https://picture2.zhihuicn.com/testImage/2/2020/7/16/54017D3C5E3DFBF292097D96DF84B6E4.png"><br>1.请在上图的横线上,填上花的结构名称:(从上至下)、、、、。2.根据桃花的结构回答下列问题:①能保护花的内部结构的是和。②能吸引昆虫的结构是、和。③花的主要结构是和。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/0851c42b78a843a9b7cbe9bf9a84c67c/F73C1949E609AF792293AB2A04330E70.png"><br>解析<br>略<br>
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