False colony - Giguntai

Japanese: 偽群体 - ぎぐんたい
False colony - Giguntai

…Each individual that makes up a colony is called an individual or zooid, and in a true colony, the members are connected to each other through protoplasm, and all members are affected by nutritional intake and responses to stimuli. In contrast, if the members are only attached by dead substances such as shells and have no connection to each other, it is called a pseudocolony. Organisms that form colonies include plants such as cyanobacteria and green algae, and animals such as protozoans, sponges, cnidarians, endoprocta, bryozoans, and ascidians.

*Some of the terminology explanations that refer to "fake colonies" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…群体を構成するおのおのの個体を個員または個虫zooidといい,真の意味の群体では,個員が互いに原形質によって連絡して,栄養摂取や刺激に対する反応は全個員に及ぶ。これに対して殻などの死んだ物質により接着するのみで,互いの連絡がない場合は,偽群体pseudcolonyとよぶ。群体をつくる生物には,植物ではラン藻植物,緑藻植物などがあり,動物では原生動物,海綿動物,刺胞動物,内肛動物,コケムシ類,ホヤ類が知られている。…

※「偽群体」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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