改进1:试验发现,用小白菜幼苗嫩叶上的表皮毛细胞取代黑藻做观察细胞质流动的实验材料,效果很好。其优点主要表现在三个方面:(1)小白菜幼叶表皮毛细胞体积较大,叶绿体多,而且由于细胞突起伸展在表皮之外,细胞之间互不重叠,可用刀片切取小白菜幼嫩叶边缘一小片制成的临时装片观 Improvement 1: The experiment found that using the epidermis hair cells on the young leaves of young cabbage seedlings to replace the black algae as experimental materials for observation of cytoplasmic flow, the effect was very good. Its advantages are mainly manifested in three aspects: (1) the younger leaves of young cabbage have larger epidermis hair cells and more chloroplasts, and because the cell protrusions extend beyond the epidermis, the cells do not overlap each other, and young blades can be used to cut young cabbages. Temporary loading view made by a small piece of leaf edge