A division of lower organisms. Single-celled organisms that lack intracellular organelles such as a nucleus, mitochondria, or chloroplasts. Along with bacteria, they are prokaryotes and are distinguished from other higher eukaryotes. There are approximately 1,500 species in 1 class, 3 to 5 orders, 23 families, and 160 genera. Cyanobacteria contain pigment proteins such as phycocyanin in addition to chlorophyll a in their chloroplasts, and produce and store cyanobacterial starch through photosynthesis. For this reason, they are classified as a division of photosynthetic plants and are sometimes called cyanobacteria. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
下等生物の一門。核,ミトコンドリア,葉緑体などの細胞内小器官をもたない単細胞の生物で,バクテリアとともに原核生物として,他の高等な真核生物と区別される。1綱3~5目23科160属約1500の種をもつ。ラン藻類は葉緑体内にクロロフィルaのほかフィコシアニンなどの色素タンパク質を含み,光合成によりラン藻デンプンを生成,貯蔵する。このことから,分類上光合成植物の一門として扱い,ラン色植物と呼ぶこともある。
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 |
>>: Ovarian cyst - ovarian cyst
...A military commander in the Azuchi-Momoyama pe...
Traditionally, the three prefectures of Shizuoka,...
〘 noun 〙 Imperial court military forces. Governmen...
After the Second World War, Renato Guttuso (1912-...
A space (cavity) between the body wall and variou...
…The teeth are single-pointed, homomorphic, and t...
...Because he maintained a long and extraordinary...
A type of puppet theater and Kabuki. A general ter...
[Born] April 10, 1755, Meissen Died July 2, 1843. ...
…[Michio Tamura]. … *Some of the terminology that...
It is about people enjoying sports activities thr...
…In Latin, they are called Gratiae, and in Englis...
Abbreviation for Petróleos Brasileiros, SA, the Br...
…There are three types of natural selection, base...
…In China, decoration using shells is said to hav...