definitions
Volvocales (n.)
1.chiefly freshwater green algae; solitary or colonial
synonyms
Volvocales (n.)
phrases
analogical dictionary
botany[Domaine]
Alga[Domaine]
kingdom Protoctista, Protoctista - Chlorophyta, division Chlorophyta[membre]
protoctist order[Hyper.]
Volvocales (n.)
Wikipedia
Volvocales
| Volvocales | |
|---|---|
 |
|
| (A) Gonium pectorale, (B) Eudorina elegans, (C) Pleodorina californica, and (D) Volvox carteri | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Plantae |
| Division: | Chlorophyta |
| Class: | Chlorophyceae |
| Order: | Volvocales |
| Families | |
| Synonyms | |
|
|
In taxonomy, the Volvocales, also known as Chlamydomonadales, are an order of flagellate or pseudociliate green algae, specifically of the Chlorophyceae.[1] Volvocales can form planar or spherical colonies. These vary from Gonium (4 to 32 cells) up to Volvox (500 cells or more). Each cell has two flagella, and is similar in appearance to Chlamydomonas, with the flagella throughout the colony moving in coordination.[citation needed]
Both asexual and sexual reproduction occur. In the former, cells divide until they form new colonies, which are then released. In the smaller forms typically all cells are involved, but larger forms have anterior vegetative and posterior reproductive cells. Sexual reproduction varies from isogamy (both genders produce flagellate gametes of equal size) to oogamy (one gender produces a much larger, non-motile gamete).
The classification of the Volvocales varies. Very often they are taken to include the orders Chlamydomonadales and Dunallielales, which contain closely related unicellular flagellates, as suborders.
Contents |
References
- ^ See the NCBI webpage on Chlamydomonadales. Data extracted from the "NCBI taxonomy resources". National Center for Biotechnology Information. ftp://ftp.ncbi.nih.gov/pub/taxonomy/. Retrieved 2007-03-19.
External links
Scientific references
- PubMed references for Chlamydomonadales
- PubMed Central references for Chlamydomonadales
- Google Scholar references for Chlamydomonadales
Scientific databases
- NCBI taxonomy page for Chlamydomonadales
- Search Tree of Life taxonomy pages for Chlamydomonadales
- Search Species2000 page for Chlamydomonadales
- Guiry, M.D.; Guiry, G.M. (2008). "Volvocales". AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org/browse/taxonomy/detail/?taxonid=4541.
 |
This Chlorophyceae-related article is a stub. You can help Wikipedia by expanding it. |
sensagent's content
- definitions
- synonyms
- antonyms
- encyclopedia
Dictionary and translator for handheld
New : sensagent is now available on your handheld
Advertising ▼
Webmaster Solution
Alexandria
A windows (pop-into) of information (full-content of Sensagent) triggered by double-clicking any word on your webpage. Give contextual explanation and translation from your sites !
SensagentBox
With a SensagentBox, visitors to your site can access reliable information on over 5 million pages provided by Sensagent.com. Choose the design that fits your site.
Business solution
Improve your site content
Add new content to your site from Sensagent by XML.
Crawl products or adds
Get XML access to reach the best products.
Index images and define metadata
Get XML access to fix the meaning of your metadata.
Please, email us to describe your idea.
Lettris
Lettris is a curious tetris-clone game where all the bricks have the same square shape but different content. Each square carries a letter. To make squares disappear and save space for other squares you have to assemble English words (left, right, up, down) from the falling squares.
boggle
Boggle gives you 3 minutes to find as many words (3 letters or more) as you can in a grid of 16 letters. You can also try the grid of 16 letters. Letters must be adjacent and longer words score better. See if you can get into the grid Hall of Fame !
English dictionary
Main references
Most English definitions are provided by WordNet .
English thesaurus is mainly derived from The Integral Dictionary (TID).
English Encyclopedia is licensed by Wikipedia (GNU).
Copyrights
The wordgames anagrams, crossword, Lettris and Boggle are provided by Memodata.
The web service Alexandria is granted from Memodata for the Ebay search.
The SensagentBox are offered by sensAgent.
Translation
Change the target language to find translations.
Tips: browse the semantic fields (see From ideas to words) in two languages to learn more.
last searches on the dictionary :
Digimon Racing ·
X-ray astronomy ·
mamiko noto ·
Gilberto Murgas ·
committance ·
TELE QUEBEC ·
Depalgos ·
conscious ·
Karen O'Connor ·
Divin ·
6909 online visitors
computed in 0.078s
