取一段带叶的�枝插在盛有稀释红墨水的瓶中放在阳光下过一段时间对枝条进行横切和纵切后观察被染红的部分是 A．表皮b．形成层c．木质 Sketch Coloring Page

取一段带叶的�枝插在盛有稀释红墨水的瓶中放在阳光下过一段时间对枝条进行横切和纵切后观察被染红的部分是 A．表皮b．形成层c．木质 Template

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tomski取一段带叶的�枝插在盛有稀释红墨水的瓶中放在阳光下过一段时间对枝条进行横切和纵切后观察被染红的部分是 a．表皮b．形成层c．木质 coloring

见下图剪取一段带叶的木本植物枝条把下端插入稀释了的红墨水中过一段时间当看到叶脉微红以后把这个枝条纵切和横切用放大镜观察哪一部分被 sketch template

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把一段带叶的茎的下端插入装有稀释红墨水的瓶子里放置在温暖的阳光下过一段时间后当叶脉变得微红时将茎切开会�现茎的横切面也变成了红色．对 sketch template

选取粗细所带叶片大致相�的生�活动旺盛的同种植物新鲜的三段枝条把其中一枝的叶片去掉插入相同盛稀释红墨水的瓶子里然后将AC放到阳光下 sketch template

七年级生物上册354植物茎的输导功能同步课时达标练习苏教版教案 Word文档在线阅读与下载免费文档 sketch template

把一段带叶的茎的下端插入装有稀释红墨水的瓶子里放置在温暖的阳光下过一段时间后当叶脉变得微红时将茎切开会�现茎的横切面也变成了红色．对 sketch template

取一段带叶的枝条插在盛有稀释红墨水的瓶中放在阳光下过一段时间用刀片把枝条纵切开用放大镜观察被染成红色的是 A．导管B．筛管C sketch template

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取一段带叶的枝条插入盛有红色染液的瓶里过一段时间把茎切开观察被染色成红色的部分是 A�皮 B形成层 C木质部 D韧皮部——青夏 sketch template

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取一段带叶的�枝插在盛有稀释红墨水的瓶中放在阳光下过一段时间对枝条进行横切和纵切后观察被染红的部分是 A．表皮B．形成层C．木质 sketch template

取一段带叶的�枝插在盛有稀释红墨水的瓶中放在阳光下过一段时间对枝条进行横切和纵切后观察被染红的部分是 A．表皮B．形成层C．木质 sketch template

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