右图是菠菜叶片的结构示意图据图回答下列问题1叶片结构的上表皮由图中序号 表示叶脉由图中序号 表示.2 是植物蒸腾失水的“门户 Template




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tomski右图是菠菜叶片的结构示意图据图回答下列问题1叶片结构的上表皮由图中序号 表示叶脉由图中序号 表示.2 coloring