GameTangium

…They are found widely in animals and plants that reproduce sexually, except for blue-green algae. In plants, they are produced in gametangium, which grow on the gametophyte, but in unicellular algae such as Chlamydomonas , the gametes are indistinguishable from individual cells in appearance. In algae such as Chlamydomonas and Urothrix, the male and female gametes are the same shape and indistinguishable, called isogametes, and in algae such as Chlamydomonas and Urothrix, the female gametes are large and the male gametes are small, called anisogametes. …

*Some of the terminology explanations that mention "gametangium" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…動物およびラン藻以外の有性生殖を営む植物に広く存在する。植物では配偶体上に生じる配偶子囊gametangiumの中につくられるが，クラミドモナスChlamydomonasなどの単細胞の藻類では，配偶子は個体細胞と外形上区別がつかない。クラミドモナス，ウロツリックスなどの藻類のように，雌雄の配偶子が同形で区別がつかないものを同形配偶子isogamete，雌性配偶子が大きく，雄性配偶子が小さいものを異形配偶子anisogameteという。…

※「gametangium」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