2021-2022学年人教版生物七年级上册10分钟达标训练：3.2.3开花和结果
※题型：单选题※知识点：单选题※试题难度：中等<br>“接天莲叶无穷碧,映日荷花别样红。”从这句诗中,可看出荷花的特点是( )<br>A.花瓣不鲜艳<br>B.靠风力传粉<br>C.具有鲜艳的花冠,属于虫媒花<br>D.花粉多而轻,属于风媒花<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/a3ae3abac25449c2b865657ee4bb57b4/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/4ad7ac5b1f1c4a6985a6e782abed0256/991C7A84EFF8B2B310BE562C4CCFE286.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>“人间四月芳菲尽,山寺桃花始盛开”。桃花结构中能够产生花粉的是( )<br>A.雄蕊 B.子房 C.花瓣 D.柱头<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/251a41851ded4c05b1a677da9754647a/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2021/2be73c8aca2f4d369fac5bdc191858f6/A34393D4FC5E9A9DA97C79F075695C83.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>图甲是传粉受精过程示意图,图乙是果实结构示意图。下列叙述错误的是( )<img src="https://picture2.zhihuicn.com/testImage/2/2020/8/18/3D7B6DAEFA16A7C6D0933D7889BFEFD7.png"><br>A.图甲中1是花药,成熟后散放出花粉<br>B.图甲中4表示花粉管,内有精子<br>C.图乙中的①由图甲中的子房壁发育而来<br>D.图乙中的②由图甲中的受精卵发育而来<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/eb87354ade9a4220a3ebfa3eedaadf45/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/0489be2075de4f6dada0b01700577b11/8DCC2B0084DCECEE7823E92125F99C87.png"><br><br>
页:
[1]