在九年义务教育初级中学教科书中,有一个实验:“观察细胞质的流动”。通过多年的实践,我们对实验材料加以更换,使用多孔茨藻,取得了良好的实验结果。由于多孔茨藻叶片只有一层细胞,取材极为方便,只要用镊子从其茎上轻轻取下一片幼嫩叶子即可。制片时不会出现细胞重叠现象,而且由于细胞内有许多 In the nine-year compulsory secondary school textbooks, there is an experiment: “observe the flow of cytoplasm.” Through many years of practice, we have replaced the experimental materials and used cyanobacteria to obtain good experimental results. Since only one layer of cells is present in the leaves of the genus Citrifolia, it is very convenient to use them as long as the young leaves are gently removed from their stems with forceps. There are no cell overlaps during production and there are many