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一.什么是个体发育?什么是系统发育?(一)什么是个体发育呢?个体发育是个体生命从开始到死亡的演变历史。一般指多细胞生物从受精卵起到个体死亡止的过程而言。有人以为个体发育只包括胚胎发育,或主要指胚胎发育而言。这样的概念是不够完满的。个体发育的内容比胚胎教育的内容丰富得多。胚胎发育一般指个体在卵壳内或母体内的发育而言,而个体发育除了胚胎发育以外,还有胚后期的发育。但也有人认为胚胎发育是从受精卵起到个体成熟止的发育。胚胎发育在这样的定义下就跟个
What is individual development? What is phylogenetic? (A) what is the individual development? Individual development is the history of individual life evolution from the beginning to the death. Generally refers to the multicellular organisms from the fertilized egg to the death of individuals in terms of the process. Some people think that the development of an individual includes only embryonic development, or mainly refers to the development of the embryo. This concept is not perfect. The content of individual development is much more abundant than the content of embryo education. Embryonic development generally refers to the development of individuals in the egg shell or maternal body, and individual development in addition to embryonic development, as well as embryonic development. However, some people think that embryonic development is from the fertilized egg until the development of individual maturity. Embryonic development is followed by this definition