Pyramimonas
Genus of algae
Pyramimonas is a genus of green algae in the order Pyramimonadales. Phototropic euglenids inherited their plastids from a close relative of Pyramimonas which was an endosymbiont inside phagotrophic eukaryovorous euglenids.
01Description
Pyramimonas is a unicellular organism consisting of cells with at least four flagella which emerge from the anterior end. The cell is shaped like an inverse pyramid, and is square or rounded in cross section. The anterior end of the cell has a depression from which usually four (in a few species eight, one species 16) flagella emerge.
The cell contains one cup-shaped chloroplast which is divided at the anterior into four or eight lobes. The posterior (base) of the chloroplast has one pyrenoid. One or two eyespots are present at the anterior, middle, or posterior of the cell depending on the species. One species, Pyramimonas cyrtoptera, differs from all other species in having two chloroplasts, two eyespots, and two pairs of eyespots of unequal size.
Sources and credits
This article is adapted from the Wikipedia article “Pyramimonas”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.
Images, from Wikimedia Commons:
- Alger, Pyramimonas tetrarhynchus, Nordisk familjebok.png by Nordisk familjebok, Public domain
- Pyramimonas sp color.jpg by Pyramimonas_sp.jpg: ja:User:NEON / User:NEON_ja derivative work: Addicted04 (talk), CC BY-SA 3.0
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