初中生物学里,谈到了植物的蒸腾作用,水的运输途径是从根部通过茎到达叶。在讲解这一部分时,都是利用教材中的演示实验来说明,即:在水里切取带叶的茎,插在盛有稀释红墨水的玻璃瓶里,放在阳光下照射3～4 h 后,红墨水上升,木质部染成红色。但是,我们用肉眼还是不能很清楚地看出维管束在植物体内的分布情况,用显微镜观察切片,也往往只能看到植物的部分维管束。因此,很难满足我们对一株植物从根部到叶的整个维管束系统的分布和了解。如果有一株整体透明的植物标本,就更能增强教学的直观性。我成功地制作了植 In junior biology, when it comes to the transpiration of plants, water is transported from the root through the stem to the leaves. In the explanation of this section, demonstration experiments in the textbooks were used to explain that the stem with leaves was cut in water, inserted in a glass bottle with diluted red ink, and exposed to sunlight for 3 to 4 hours. The red ink rose and the xylem dyed red. However, we can’t clearly see the distribution of vascular bundles in the plants with the naked eye. Observing the sections with a microscope, we can only see part of the vascular bundles of the plants. Therefore, it is difficult to meet our distribution and understanding of the entire vascular bundle system from root to leaf of a plant. If there is a whole transparent plant specimen, it will enhance the intuitiveness of teaching. I successfully produced a plant