江西省万载县高中生物第3章植物的激素调节3.2生长素的生理作用2教案新人教版必修3.doc

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1 -3.2 生长素的生理作用 2教学目标 了解生长素类似物的应用;探索生长素类似物促进插条生根的最适宜浓度重点 了解生长素类似物的应用难点 了解生长素类似物的应用教学过程 时间 设计意图 个人备课一、 检查预习检查世纪金榜自主预习【33】完成情况。二、导入新课复习导入三、推进新课1、生长素类似物(1)概念(2)应用: 防止果实和叶片的脱落。促进结实,获得_。促进扦插枝条的_。用作除草剂2、探索生长素类似物促进扦插枝条生根的最适浓度(1)实验原理(2)常用方法浸泡法:要求生长素类似物溶液的浓度_。_:省时。(3)实验流程四、课堂训练 例:在“探索生长素类似物促进插条生根的最适浓度”的探究过程中,下列关于注意事项的说法中,不正确的是( )3130检查预习情况,为讲解新课铺垫。导入新课,口述学习目标讲授分析,掌握生长素类似物的应用- 2 -A.在正式实验前先做一个预实验,目的是确定适宜浓度范围,摸索实验条件B.找准插条的上下端,防止颠倒C.所用的每个插条都应留 34 个芽D.此探究实验不存在对照实验答案: D五、课堂小结六、 作业和预习1、完成课时作业本“课时作业十”2、预习其他植物激素641当堂训练,检测知识运用总结本课学习内容,学生记忆相关知识点。布置下节课的预习任务教学反思

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