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“世代交替”是生物学、动物学、特别是植物学上常見的名詞;这一名詞已有百年以上的历史,但却一直缺少統一的定义。反映在教学方面:高等学校的动物学和植物学上的概念就不一致,大学教材和中学教材上也有分歧。例如:紫菜是否有世代交替?絲藻有沒有?墨角藻、馬尾藻的植物体是不是孢子体?被子植物有没有世代交替?这些问题在各种教材上互有出入,引起了教学上的一些困难与混乱。有关世代交替的全部问题,恐怕还不是在短期內能够完全解决的。本文的目的是对这一問題作一初步介紹,企图对某些方面加以澄清,并从便利教学的角度提出一些不够成熟的建議,提供参考和討論。
“Alternate generations” is a common noun in biology, zoology and especially botany. This term has been in existence for more than 100 years but has lacked a uniform definition. Reflected in teaching: colleges and universities in the zoology and botany concepts are inconsistent, university textbooks and secondary school textbooks also have differences. For example: seaweed is there a generation of alternate? Silk algae have? Fucus, Sargassum is the body of the sporozoite? Are there any generations of angiosperms? These problems in a variety of teaching materials on each other, causing some teaching difficulties And confusion. All the questions concerning the alternation of generations may not be completely solved in the short term. The purpose of this article is to provide an initial introduction to this issue, to clarify some aspects and to make some suggestions and discussions from the perspective of teaching facilitation.