在初中植物学課本(1963年版本)第二章第一节种子的构造部分,第14頁有关玉米种子的构造一段中提到:“把浸軟了的玉米粒,按照图15所画的虛綫切开。从切面上可以看到:玉米粒的外面包着厚皮,厚皮的外层是果皮,里层是种皮,果皮和种皮紧密地結合着,不能分开。可見,一个玉米粒实际上是一个果实,……。”在这一段教 In the text of the chapter on the structure of the seeds of the second chapter of the first chapter of the botany textbook of junior high school (1963 version), page 14, the section on the structure of corn seeds mentions: “The soaked corn kernels, Line cut. Can be seen from the section: corn grain wrapped thick skin, thick skin is the outer layer of peel, the inner layer is the seed coat, peel and the seed coat closely integrated, can not be separated. Can be seen that a corn Grain is actually a fruit, ... ”Teaching in this section