众所周知,每一学科都有自己的基本概念,它是反映事物本质属性的思维形式,由内涵(即概念的本质)和外延(概念的适应范围)两部分组成。揭示概念的内涵叫定义,中学生物名词解释一般是指这一概念的定义,也就是用下定义的方法把概念的本质总结出来。常见的定义方法大约可分为以下三类。 (一) 单独概念用特征描述代替下定义反映某一特定的,个别的对象或现象的概念叫单独概念,它不能为另一概念所包含。这类概念没有真正的逻辑学定义,是用描述这一概念的最重要的个别特征作为定义的。客观事 It is well-known that each subject has its own basic concept. It is a form of thinking that reflects the essential nature of things. It consists of two parts: connotation (ie the essence of concept) and extension (the scope of concept). Reveal the connotation of the concept is called the definition of high school biological terms generally refers to the definition of this concept, that is, the definition of the method used to summarize the nature of the concept. Common definition methods can be divided into the following three categories. (A) the concept of a single concept Instead of using the definition of the definition of a specific object, reflecting the phenomenon of a concept is called a separate concept, it can not be included by another concept. There is no real logical definition of such concepts, defined by the most important individual traits that describe this concept. Objective things