Porifera

Japanese: Porifera
Porifera

…the name of the invertebrate organisms belonging to the phylum Porifera. They are the most primitive metazoan organisms in terms of phylogenetic structure, with only a low degree of differentiation of the cells that make up their bodies, no true tissues or organs yet formed, and no nerves or muscles.

*Some of the terminology that mentions "Porifera" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…海綿動物門Poriferaに属する無脊椎動物の総称。体を構成している細胞の分化の程度が低く,真の組織や器官がまだ形成されておらず,そのうえ神経や筋肉もない系統学上もっとも原始的な後生動物である。…

※「Porifera」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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