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右图为某种植物幼苗均分为甲乙两组后在两种不同浓度的kno3溶液中培养时鲜重的变化情况下列有关叙述错误的是a．3h时两组幼苗均已出现 Template






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tomski右图为某种植物幼苗均分为甲乙两组后在两种不同浓度的kno3溶液中培养时鲜重的变化情况下列有关叙述错误的是a．3h时两组幼苗均已出现 coloring
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植物种子萌成幼苗后通过光合作用不断制造有机物在满足植物自身需求的同时也为生物圈中包括人类在内的其他生物提供了基本的食物来源．回答下列 sketch template
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某学习小组要探究某种植物生长是否需要含氮的无机盐该小组在甲乙两只试管内放入适量营养液各培养一株大小相同的健壮幼苗两后观察两株幼苗的 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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如图某同学设计的无土栽培实验甲试管内盛的是土壤浸出液乙试管装的是等量的池塘水丙试管装的是等量的蒸馏水三株幼苗最初长势相同运用所学的 sketch template
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题目为研究某植物生长育过程中生长素与细胞分裂素之间的相互作用某生物兴趣小组进行了相关实验后绘出了如图所示曲线以下叙述正确的是 A sketch template
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30．某同学利用青菜幼苗进行了植物光性实验他把等量已芽的青菜种子均匀地排列在4个培养皿中当青菜幼苗长高至15厘米左右时对各培养皿 sketch template
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7．下列都有真正的根茎叶的植物是 A．藻类植物和苔藓植物B．苔藓植物和种子植物C．藻类植物和蕨类植物D．蕨类植物和种子植物——青夏教育 sketch template
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图一是叶片示意图请据图回答 1图中叶片所在的植物体属于生态系统成分中的 2图中C过程是通过叶脉中的 进入叶片的 3图中 sketch template
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2013年初一上生物 生物圈中的绿色植物—百一测评在线考试系统 sketch template
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3．甲图表示某植物生长素浓度与所起作用的关系乙图表示该植物幼苗水平放置培养一段时问后的生长情况下列判断不正确的是 A．从甲图可看出植物不同 sketch template
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右图为某种植物幼苗均分为甲乙两组后在两种不同浓度的KNO3溶液中培养时鲜重的变化情况下列有关叙述错误的是A．3h时两组幼苗均已出现 sketch template
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下图为某种植物幼苗均分为甲乙两组后在两种不同浓度的KNO3溶液中培养时鲜重的变化情况下列有关叙述错误的是 A．3h时两组幼苗均 sketch template
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如图为植物叶片纵切面图请据图回答．1叶片蒸腾作用需要的水大部分是由 运来的．2对叶片内部起保护作用的是 和 ．3图中各结构的细胞 sketch template
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题目图甲表示不同浓度生长素对某植物幼苗根芽的影响图乙为不同浓度24﹣D溶液对单子叶和双子叶植物的影响图丙为某植物幼苗水平横放后的 sketch template
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18．把两株同一品种同样大小的健壮幼苗分别培养在甲乙内装与甲瓶等量的土壤浸出液两个瓶内两后观察其生长状况 甲 乙 ——青夏教育精英 sketch template
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题目如图为某种植物幼苗经过单侧光照射后甲乙两侧的生长情况对照组未经单侧光处理则此时生长素浓度的比较正确的是 A甲侧＞对照＞乙 sketch template
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右图为某种植物幼苗均分为甲乙两组后在两种不同浓度的KNO3溶液中培养时鲜重的变化情况下列有关叙述错误的是A．3h时两组幼苗均已出现 sketch template
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下图为某种植物幼苗均分为甲乙两组后在两种不同浓度的KNO3溶液中培养时鲜重的变化情况下列有关叙述错误的是 A．3h时两组幼苗均 sketch template
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如图甲乙所示为两种植物的种子结构图．1在大豆种子中 是新植物体的幼体而玉米种子结构图中也有这样的结构组成现请你依该结构中各 sketch template
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17．图为某种野生动物的足下列推测肯定错误的是 A．属于一种草原猛禽 B．一定不是一种森林猛兽 C．属于一种林林肉食性飞禽 D．属于 sketch template
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题目将长势相同的甲乙两种植物幼苗各两株分别置于图1所示装置中在适宜的条件下培养测得密闭玻璃罩内的CO2含量变化情况如图2所示请据 sketch template
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图甲表示不同浓度生长素对某植物幼苗根芽的影响图乙为不同浓度24 D溶液对单子叶和双子叶植物的影响图丙为某植物幼苗水平横放后的生长情况 sketch template
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如图是某同学做的比较实验甲试管盛的是土壤浸出液乙试管盛的 是蒸馏水各培养一棵大小相同的健壮幼苗过一段时间后生长状况如图所示请回答 sketch template
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Ⅰ大量研究证实干旱会影响植物激素代谢和生长育N0是一种细胞内和细胞间的信号传递分子对植物的生长和育均有诱导作用某研究小组以玉米 sketch template
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题目图甲为燕麦胚芽鞘的光性实验图乙为水平放置于地面的幼苗根与茎的生长情况图丙为生长素浓度与根生长的关系下列分析合理的是A 单侧 sketch template
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题目某生物兴趣小组将三组长势基本相同的同种植物幼苗分别放入甲乙丙三个透明玻璃罩中密封经一昼夜暗处理后置于室外相同环境中其中甲做 sketch template
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题目将长势相同数量相等的甲乙两个品种的大豆幼苗分别置于两个相同的密闭透明玻璃罩内在光照温度等相同且适宜的条件下培养定时测定玻璃罩 sketch template
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某同学设计了下图所示的实验装置来验证叶的蒸腾作用．取三支试管各注入相同体积的清水分别插入一颗大小相似的枝条甲乙装置枝条保留全部叶丙 sketch template
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甲乙两图都表示某植物的非绿色器官CO2释放量和O2吸收量的变化下列叙述错误的是A甲图氧浓度为d时没有酒精产生B乙图C点对应的氧浓度最 sketch template
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下列有关叶绿体及光合作用的叙述正确的是 A破坏叶绿体外膜后O2不能产生 B植物生长过程中叶绿体内各种色素的比例保持不变 C与夏季 sketch template
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题目图甲表示菠菜的叶肉细胞在光强度分别为abcd时单位时间内CO2释放量和O2产生总量的变化．图乙为图甲光照强度c﹣d条件下不同浓度 sketch template
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盐碱地中生活的某种植物其细胞的液泡膜上有一种载体蛋白能将细胞质中的Na 逆浓度梯度运入液泡降低Na 对细胞质中酶的伤害下列叙述错误的是 sketch template
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题目将某植物细胞分为两组分别浸于浓度为03 G/mL的尿素溶液中然后每5分钟用显微镜观察一次并测量原生质体即仅由细胞膜包住细胞质 sketch template
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甲图中AB分别为培植于无色透明气球内质量相等的某植物幼苗气球可膨胀收缩其中B已死亡气球内的培养液中均含CO2缓冲液维持气球内 sketch template
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如图是某种二倍体动物某些细胞分裂示意图有关判断正确的是 A甲图所示细胞分裂后能形成基因型为AD的卵细胞B乙图所示细胞分裂不一定是 sketch template