双子叶植物的叶表皮一般由表皮细胞和保卫细胞构成两个保卫细胞相对形成的空隙称为气孔.如图表示气孔及其运动机理.1保卫细胞和叶表皮细胞能产生 Template




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tomski双子叶植物的叶表皮一般由表皮细胞和保卫细胞构成两个保卫细胞相对形成的空隙称为气孔.如图表示气孔及其运动机理.1保卫细胞和叶表皮细胞能产生 coloring