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高中生物课本在介绍生物的生殖种类时,介绍了无性生殖和有性生殖的概念和分类,重点介绍了有性生殖中的配子生殖类型,涉及到同配生殖、异配生殖和卵式生殖之间的进化趋势。其中异配生殖是以空球藻为例来说明,然而教材中有关空球藻的内容介绍过简,图的文字说明也不够明确,使师生学习起来有些费解,现就我们在教学中对空球藻的分类地位,形态结构、生殖方式和野外观察、采集等有关情况整理的资料作粗浅介绍,供老师们在教学中参考和指正。
In the introduction of biological reproductions in high school biology textbooks, the concepts and classifications of asexual reproduction and sexual reproduction were introduced, focusing on the reproductive types of gametes in sexual reproduction, involving reproductive and heterozygous reproduction and egg reproduction. Between the evolutionary trends. The heterozygous reproduction is illustrated by the example of air algae. However, the contents of the textbook related to air algae have been briefly introduced. The text description of the map is also not clear enough, which makes the students and teachers uneasy to learn. Now we are teaching The taxonomic status, morphological structure, reproductive methods, field observation, and collection of air saccharomycetes were briefly introduced for the teachers’ reference and correction in teaching.