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高中《生物》第七章“生物与环境”讲述的是有关生物与环境之间密切关系的基础知识。教师在讲述生态系统中的食物链、能量流动等时,建议从以下几方面加深对问题的分析理解,以利提高课堂教学质量。一、关于食物链高中生物课本中对食物链所下定义是:“在生态系统中,各种生物之间由于食物关系而形成的一种联系,叫做食物链”。由于这个概念中没有指明任何食物链(捕食链)都是以绿色植物为基础,从食草动物为开始的过程。因此,有些学生就搞不清在一个生态系统中由许多食物链彼此互相连结的食物网中的确切食
Chapter 7, Biology and Environment, of Biology in High School tells the basics about the close relationship between living things and the environment. When teachers tell about the food chain and energy flow in the ecosystem, it is suggested that teachers should deepen the analysis and understanding of the problems in the following aspects in order to improve the quality of classroom teaching. First, on the food chain Biology textbook definition of high school biology is: “In the ecosystem, a variety of organisms due to the formation of a relationship between food and food, called the food chain.” Since this concept does not indicate that any food chain (prey) is based on greenery, starting with herbivores. As a result, some students are confused about the exact diet in food webs interconnected by many food chains in an ecosystem