植物学演示实验观察根对水分的吸收此实验作为课本中的细胞吸水实验的补充。方法如下:准备一个300ml广口瓶。配备一胶塞,将瓶塞用打孔器垂直打两个孔,再通过这两个孔的中心把瓶塞纵切分割为两半备用。然后取一口径与所打的孔口径相同的细玻璃管,一端在酒精喷灯火焰上加工弯成S形,另一直端插入瓶塞的一个孔中;另一孔固定一 Botany Demonstration Experimental Observations Roots’ Absorption of Water This experiment complements the cellular water uptake experiment in textbooks. Here’s how: Prepare a 300ml jar. Equipped with a stopper, the stopper will be perforated with two holes perpendicular to the hole punch, and then through the center of the two holes to cut the cork lengthwise split into two halves. And then take a diameter of the hole diameter of the hole with the same fine glass tube, one end of the flame in the alcohol torch processing S-shaped, the other straight end into a hole in the stopper; the other hole fixed one