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下列叙述正确的是a在豌豆开花以前用纸袋套住花蕊不让它接受外来花粉最终也能产生种子原因是豌豆不需要经过传粉受精就能结果b番茄果皮红色 Template






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sketch 2797 Homer by Na Ruro
sketch 5436
sketch 5165 Marceline by Marvin Chrome
sketch 2642 Red dog
sketch 3383
sketch 3032 Batman by Aaron Bahary
sketch 5343
sketch 1455 donara

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sketch 5361 Emma Watson by Glynis June Williams
sketch 1447 donara
sketch 3558 Eye Rubel Parvez
sketch 2781
sketch 5307
sketch 1446
sketch 817
sketch 3595





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tomski下列叙述正确的是a在豌豆开花以前用纸袋套住花蕊不让它接受外来花粉最终也能产生种子原因是豌豆不需要经过传粉受精就能结果b番茄果皮红色 coloring
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关于一朵桃花和一朵豌豆花的结构叙述中，不正确的是 sketch template
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用豌豆进行人工杂交实验，相关叙述正确的是（ sketch template
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20．下列有关生物学知识叙述正确的是 A．在豌豆开花以前用纸袋套住花蕊不让它接受外来花粉最终也能产生种子原因是豌豆不需要经传粉受精 sketch template
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下列有关孟德尔豌豆杂交实验的叙述正确的是 A．孟德尔在豌豆开花时进行去雄和授粉实现亲本的杂交 B．孟德尔研究豌豆花的构造但元需考雌蕊 sketch template
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下列有关孟德尔豌豆杂交实验的叙述正确的是A．孟德尔在豌豆开花时进行去雄和授粉实现亲本的杂交B．孟德尔研究豌豆花的构造但无需考雌蕊雄蕊 sketch template
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下列有关孟德尔豌豆杂交实验的叙述正确的是 A．孟德尔在豌豆开花时进行去雄和授粉实现亲本的杂交B．孟德尔研究豌豆花的构造但无需考雌蕊 sketch template
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下图是自然界中豌豆的生殖期示意图下列有关叙述正确的是 A．a过程需要的营养物质由子叶提供 B．b过程中有机物的重量一直持续增加 C．基因 sketch template
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豌豆果实开裂时果皮内蜷缩将种子弹射出去．右图为豌豆果实的结构示意图下列叙述正确的是 A．图中的由子房育而成B．图中的由受精卵 sketch template
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下列有关孟德尔豌豆杂交实验的叙述正确的是 A．孟德尔在豌豆开花时进行去雄和授粉实现亲本的杂交B．杂交时两次套袋的主要目的是防止其他花粉 sketch template
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如右上图是自然界中豌豆的生殖期示意图下列有关叙述正确的是 A．细胞的分化只生在a过程中B．纯种豌豆自交产生的子代只有一种性状C．非同源 sketch template
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下列有关孟德尔豌豆杂交实验的叙述正确的是 A．孟德尔在豌豆开花时进行去雄和授粉实现亲本的杂交B．孟德尔研究豌豆花的构造但无需考雌蕊 sketch template
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豌豆的黄色子叶是显性有色种皮是显性用纯合的黄色子叶有色种皮的豌豆作父本用绿色子叶无色种皮的豌豆作母本进行杂交所得种子连续播种和自 sketch template
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下图是孟德尔在做豌豆杂交实验时用到的人工异花传粉操作示意图请据图回答问题 1从花的结构上分析孟德尔选用豌豆做杂交实验取得成功的最主要 sketch template
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下列有关孟德尔豌豆杂交实验的叙述正确的是A．孟德尔在豌豆开花时进行去雄和授粉实现亲本的杂交B．孟德尔研究豌豆花的构造但元需考雌蕊雄蕊 sketch template
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下列有关孟德尔豌豆杂交实验的叙述正确的是A．孟德尔在豌豆开花时进行去雄和授粉实现亲本的杂交B．孟德尔研究豌豆花的构造但无需考雌蕊雄蕊 sketch template
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下列有关孟德尔豌豆杂交实验的叙述正确的是 A．孟德尔在豌豆开花后进行去雄和授粉实现亲本的杂交B．孟德尔利用了豌豆自花传粉闭花受粉的 sketch template
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下图为莲与莲蓬中莲子的结构示意图。下列叙述正确的是（ sketch template
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如右上图是自然界中豌豆的生殖期示意图下列有关叙述正确的是 A．细胞的分化只生在a过程中B．纯种豌豆自交产生的子代只有一种性状C．非同源 sketch template
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右图示豌豆自然生殖期下列有关叙述正确的是 A．基因的表达主要在a过程中 B．纯种豌豆自交产生的子代只有一种性状 C．基困重组过程只生于c sketch template
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右图是自然界中豌豆的生殖期示意图下列有关叙述正确的是 A．基因的表达主要在a过程中 B．杂合子豌豆自交产生的子代中无纯合子 C．在d过程中 sketch template
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如图是菜豆种子萌成幼苗的各阶段示意图下列哪项能正确表示菜豆种子在萌成幼苗过程中体内有机物含量的变化情况 A．B．C．D．——青夏教育 sketch template
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3．右图是自然界豌豆的生殖期示意图下列有关叙述正确的是 A．a过程需要的营养物质由子叶提供 B．b过程中有机物的重量一直持续增加 sketch template
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福建省晋江市毓英中学2015届高三下学期第11次理综训练生物试题 Word版含答案 Word文档在线阅读与下载 无忧文档 sketch template
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如图为豌豆的一对相对性状遗传实验过程图解请仔细读图后回答下列问题1在该实验的亲本中父本是矮茎豌豆母本是高茎豌豆．2操作叫去雄 sketch template
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下列有关细胞的物质组成结构和功能的叙述正确的是 A．正常生理状态下溶酶体对机体自身的细胞结构无分解作用B．相同质量的糖类和脂肪产能不同 sketch template
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下图为豌豆的一对相对性状遗传实验过程图解请仔细读图后回答下列问题1在该实验的亲本中父本是 母本是 2操作叫 为了确保杂交 sketch template
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请将下列绿色植物在光下制造有机物的实验步骤的正确序号填在横线上 1绿色植物在光下制造有机物的实验步骤是 1→ →2→ →4→6→ sketch template
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题目生物圈的范围是 A．大气圈水圈和岩石圈的全部B．大气圈和水圈的全部岩石圈的上部C．大气圈的底部水圈和岩石圈的全部D．大气圈的 sketch template
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下列关于染色单体的叙述正确的一项是 A交叉互换生在姐妹染色单体之间B姐妹染色单体在减数第一次分裂后期分离C减数第二次分裂后期 sketch template
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下列不属于生态系统的是A神农湖B石峰公园C株洲市D二中校园内的所有桂花——青夏教育精英家教—— sketch template
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下列关于几种绿色植物特点的叙述正确的是 A．海带依靠叶吸收水分和无机盐B．桫椤属于裸子植物受精脱离了水的限制C．卷柏依靠根吸收水分和 sketch template
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14．图中abc表示生物体内三种生理过程．下列叙述正确的是 A．c过程中一个mRNA可结合多个核糖体同时进行多条不同肽链的合成B sketch template