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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Pediastrum ： ウィキペディア英語版 Pediastrum ''Pediastrum'' is a genus of green algae, in the family Hydrodictyaceae.〔 It is a photoautotrophic, nonmotile coenobial (fixed number of cells) green algae that inhabits freshwater environments. ==Reproduction== Pediastrum reproduces asexually by producing autocolonies. The protoplast of each parent cell gives rise to a biflagellate zoospore for each cell in the parent colony. The zoospores are freed from the parent cell within a vesicle and then arrange themselves into the cellular arrangement for that particular species. The cells then enlarge until they reach full size. Each cell can generate a daughter autocolony with exactly the same number and arrangement of cells as the parent colony. Pediastrum reproduces sexually via the fusion of small, biflagellate gametes that are released from the parent cell. The zygotes germinate into zoospores, which turn into thick-walled polyeders that generate the new coenobia. These polyeders can also result from asexual reproduction. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Pediastrum」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.