初中《生物》教材中,关于《茎》的中心内容是阐述芽的发展和茎的输导功能.通过教学,要使学生了解芽的构造和发育,茎的构造和功能以及在生产上的应用. 下面谈谈这部分教学中的重点和难点. In the “Biology” textbook of junior high school, the center of “Stem” is to explain the development of buds and the guiding function of stems. Through teaching, students should be allowed to understand the structure and development of buds, the structure and function of stems and their application in production Here to talk about this part of the teaching of the key and difficult.