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学生知道种子的结构,但对于如何辨认双子叶植物和单子叶植物,感到很困难,对于与种子萌发相关的知识也只停留于机械的记忆。鉴于此,教师应指导学生做种子萌发实验:了解植物吸水的原理;探究种子萌发需要的环境条件;观察种子萌发的过程;知道种子在萌发的过程中干重和湿重的变化规律。
Students know the structure of the seed, but find it difficult to identify dicots and monocots, and knowledge about seed germination rests solely on mechanical memory. In view of this, teachers should guide students to do seed germination experiments: understand the principle of plant water absorption; explore the environmental conditions needed for seed germination; observe the seed germination process; know the seed in the germination process dry weight and wet weight changes.