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36．将燕麦胚芽鞘尖端放在琼脂小块上正中插入生长素不能透过的�母片琼脂被分成相等的两部分单侧光照射后琼脂内生长素含量 A．左右相等 B Template






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sketch 1082 Seher 6 years
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sketch 2892 Joker by Frank Aguiar Au
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sketch 2486 Face by sketchmaster
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sketch 4475 Daft Punk by Reggie Garcia
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tomski36．将燕麦胚芽鞘尖端放在琼脂小块上正中插入生长素不能透过的�母片琼脂被分成相等的两部分单侧光照射后琼脂内生长素含量 a．左右相等 b coloring
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荷兰学家温特于1928年把燕麦胚芽鞘尖端切下放在琼脂薄片上约1 2 H后移去胚芽鞘尖端将琼脂小块放在去顶的胚芽鞘一侧然后置于暗条件 sketch template
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如下图所示燕麦实验中实验组用接触过胚芽鞘尖端的琼脂块放在切去尖端的胚芽鞘切面的一侧而对照组用没接触过胚芽鞘尖端的琼脂块放在切去尖端的胚芽 sketch template
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研人将燕麦胚芽鞘尖端放在琼脂块上并给予单侧光照 高途 sketch template
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下图是胚芽鞘光性实验示意图将生长状况相同的四组燕麦幼苗分别进行如下处理A处于自然状态B切去胚芽鞘尖端C在胚芽鞘尖端罩上纸罩D在 sketch template
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3．荷兰学者Frits．Went于1928年把燕麦胚芽鞘尖端切下放在琼脂薄片上约1h 2h后移去胚芽鞘尖端将琼脂小块放在去顶的胚芽鞘一侧 sketch template
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荷兰学家温特于1928年把燕麦胚芽鞘尖端切下放在琼脂薄片上约1 2 H后移去胚芽鞘尖端将琼脂小块放在去顶的胚芽鞘一侧然后置于暗条件 sketch template
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14．对燕麦胚芽鞘尖端进行下图所示的处理 将尖端套上不透光的锡箔小帽 将尖端下部用锡箔遮住 在尖端纵插入锡箔 在尖端 sketch template
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荷兰学者Erits Went于1928年把燕麦胚芽鞘尖端切下放在琼脂薄片上约1 2 H后移去胚芽鞘尖端将琼脂小块放在去顶胚芽鞘一侧然后 sketch template
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为探究单侧光是使胚芽鞘尖端的生长素转移了，还是将生长素分解了，某研究性课题小组设计了下图所示实验图1中的琼脂块一段时间后放置到图2去掉尖端的 sketch template
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荷兰学者Erits Went于1928年把燕麦胚芽鞘尖端切下放在琼脂薄片上约1 2 H后移去胚芽鞘尖端将琼脂小块放在去顶胚芽鞘一侧然后 sketch template
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生长素的现过程 1达尔文的植物幼苗胚芽鞘的光性实验 实验一如图甲所示用小纸盒罩住幼苗在小纸盒的一侧挖一小孔用光照射培养一 sketch template
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35．如图是用燕麦胚芽鞘进行的实验“1 “5 放在暗箱中“2 “4 放在左侧有孔的暗箱中“3 在切去尖端的切面上放一含生长素的琼脂小块 sketch template
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16．某同学利用生了光弯曲的燕麦胚芽鞘制作成切片并观察他绘制了背光侧和光侧的细胞形态示意图结合课本知识可得出的结论是——青夏教育 sketch template
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16．某同学利用生了光弯曲的燕麦胚芽鞘制作成切片并观察他绘制了背光侧和光侧的细胞形态示意图结合课本知识可得出的结论是——青夏教育 sketch template
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AB两图是荷兰植物学家温特所做的燕麦实验C图是在用含不同浓度生长素的琼脂小块放在去顶的胚芽鞘切面一侧的情况下根据实验结果绘制的1A sketch template
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为探究在单侧光照射下燕麦胚芽鞘产生的生长素横运输是生在尖端A段还是生在尖端下面一段B段某同学进行了如下图所示的实验下列叙述 sketch template
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将燕麦胚芽鞘尖端置于琼脂块上并单侧光照射AB琼脂块间以玻璃片隔开一段时间将AB琼脂块放在去掉尖端的胚芽鞘上遮光匀速旋转单 sketch template
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题目在验证生长素类似物A对小麦胚芽鞘伸长影响的实验中将如图1所示取得的切段浸入蒸馏水中1小时后再分别转入5种浓度的A溶液和含糖的磷酸盐 sketch template
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下图是达尔文利用燕麦胚芽鞘所做的实验该实验研究的目的是探究A．胚芽鞘背光的一侧促进生长的物质含量是否较多B．胚芽鞘尖端对光线是否敏感照光后 sketch template
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下列哪种状况下胚芽鞘将光弯曲生长 A．B．C．D．——青夏教育精英家教—— sketch template
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在右侧照光的情况下对燕麦胚芽鞘进行处理如图所示．下列说法中错误的是 A直立上生长的是B弯光源生长的是C不生长也不弯曲的是 sketch template
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将燕麦胚芽鞘的尖端放在琼脂小块上正中插入生长素不能通过的母片琼脂被分成相等的两部分单侧光照射后琼脂内生长素含量 A．左右相等B sketch template
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32．为验证生长素类似物A对小麦胚芽鞘伸长影响的实验中将如图1所示取得的切段浸入蒸馏水中1小时后再分别转入5种浓度的A溶液 Ww^w sketch template
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将燕麦胚芽鞘尖端以下部分用不透光锡箔遮住然后放在左侧照光的条件下培养胚芽鞘将 弯曲——青夏教育精英家教—— sketch template
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将燕麦胚芽鞘尖端放在琼脂小块上正中插入生长素不能透过的母片并将琼脂分成相等的两部分．将图结构置于360度匀速旋转盘上单侧光照射琼脂内 sketch template
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下列哪种状况下胚芽鞘将光弯曲生长 A．B．C．D．——青夏教育精英家教—— sketch template
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下图为几组胚芽鞘光性实验的示意图试分析各组实验的结论将编号填在适当的括号中 图注1．不透光罩2．切去尖端3．不透水母片4．不 sketch template
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下列是有关微生物的培养与应用的问题请分析回答 1下图是利用 法进行微生物接种把聚集的菌种逐步 分散到培养基的表面为达到这一目的 sketch template
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用燕麦幼苗作实验材料在暗环境中分别进行以下两项实验 1 将被切下来的胚芽鞘顶端C水平放置分别取两个琼脂块A和B紧贴在胚芽鞘顶端C sketch template
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图甲表示对燕麦胚芽鞘所做的处理图乙表示将处理后的琼脂块分别放在去除尖端胚芽鞘上的三种处理方式一段时间后的生长情况依次是 A sketch template
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某小组开展“探究生长素类似物促进插条生根的最适浓度 课题研究在制定实验方案过程中下列哪一项可以不考 A．蒸馏水处理作为对照 B．配置一 sketch template
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右图中甲表示对燕麦胚芽鞘所做的处理乙表示将处理后的琼脂块分别放置在去除尖端的胚芽鞘上的三种处理方式一段时间后的生长情况依次是 A sketch template
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题目用燕麦胚芽鞘及幼苗进行如图所示的实验一段时间后不会引起弯曲现象的是 A B C D sketch template
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36．将燕麦胚芽鞘尖端放在琼脂小块上正中插入生长素不能透过的母片琼脂被分成相等的两部分单侧光照射后琼脂内生长素含量 A．左右相等 B sketch template
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7．用燕麦胚芽鞘及幼苗进行如下图所示实验一段时间后会引起弯曲现象的是 A． B． C． ——青夏教育精英家教—— sketch template