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不知小朋友们是否留意过,将藕折断时,在断面上却总是连着许许多多的丝丝。你们知道这是为什么吗? 原来,植物要生长,需要有运输水和养料的组织。而这些组织主要是一些空心的长筒形细胞
I do not know whether the children have noticed, the lotus broken off, but always connected in the cross section of many slightest. Did you know why this is true? It turns out that plants need to grow and require tissues that transport water and nutrients. These organizations are mainly hollow long cylindrical cells