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Polyphysaceae
The Polyphysaceae is a taxonomic family (biology), family of green algae, one of three families in the order Dasycladales. For single-celled organisms, they are huge, growing to nearly a foot long in some cases. References Dasycladales Ulvophyceae families {{Ulvophyceae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acetabularia
''Acetabularia'' is a genus of green algae in the family Polyphysaceae. Typically found in subtropical waters, ''Acetabularia'' is a single-celled organism, but gigantic in size and complex in form, making it an excellent model organism for studying cell biology. In form, the mature ''Acetabularia'' resembles the round leaves of a Tropaeolum, nasturtium, is tall and has three anatomical parts: a bottom rhizoid that resembles a set of short roots; a long stalk in the middle; and a top umbrella of branches that may fuse into a cap. Unlike other giant unicellular organisms, which are multinucleate, members of this genus possess a single nucleus located in the rhizoid, which allows the cell to regenerate completely if its cap is removed. The caps of two ''Acetabularia'' may also be exchanged, even from two different species. In addition, if a piece of the stem is removed, with no access to the nucleus in the rhizoid, this isolated stem piece will also grow a new cap. In the 1930s� ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dasycladales
Dasycladales is an Order (biology), order of large unicellular green algae in the class Ulvophyceae. It contains two families, the Dasycladaceae and the Polyphysaceae. These single celled algae are from 2 mm to 200 mm long. They live on substrates in shallow warm (>20 °C) euhaline tropical marine waters, usually less than 20 meters deep, and protected from waves. They are very large cells. They are able to attain these sizes without numerous internal cell wells because they build calcium carbonate shells around themselves. They contain only one Cell nucleus, nucleus in their vegetative stage, which remains in the bottom of the cell in the holdfast (biology), holdfast at the substrate. Only when they are ready to produce gametes does the nucleus undergo meiosis and then numerous mitosis, mitoses into many nuclei which then migrate into the gametangia at the top of the alga. Because the nucleus is safely hidden in the holdfast, the cells easily regenerate if t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chalmasia
''Chalmasia'' is a genus of green algae in the family Polyphysaceae. The genus name of ''Chalmasia'' is in honour of Ernest Charles Philippe Auguste Munier-Chalmas (1843–1903), who was a French geologist. The genus was circumscribed by Hermann zu Solms-Laubach Hermann zu Solms-Laubach, more precisely Hermann Maximilian Carl Ludwig Friedrich Graf zu Solms-Laubach (23 December 1842 in Laubach, Grand Duchy of Hesse – 24 November 1915 in Strasbourg) was a German botanist. Life Count Solms-Laubach studi ... in Trans. Linn. Soc. London, Bot. ser.2, vol.5 on pages 2, 9, 32 and 34 in 1895. References Ulvophyceae genera Dasycladales {{Ulvophyceae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parvocaulis
''Parvocaulis'' is a genus of green algae in the family Polyphysaceae.See the NCBI The National Center for Biotechnology Information (NCBI) is part of the National Library of Medicine (NLM), a branch of the National Institutes of Health (NIH). It is approved and funded by the government of the United States. The NCBI is loca ...br>webpage on Parvocaulis Data extracted from the References Ulvophyceae genera Dasycladales {{Ulvophyceae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family (, : ) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". The delineation of what constitutes a family—or whether a described family should be acknowledged—is established and decided upon by active taxonomists. There are not strict regulations for outlining or acknowledging a family, yet in the realm of plants, these classifications often rely on both the vegetative and reproductive characteristics of plant species. Taxonomists frequently hold varying perspectives on these descriptions, leading to a lack of widespread consensus within the scientific community ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Green Algae
The green algae (: green alga) are a group of chlorophyll-containing autotrophic eukaryotes consisting of the phylum Prasinodermophyta and its unnamed sister group that contains the Chlorophyta and Charophyta/ Streptophyta. The land plants ( Embryophytes) have emerged deep within the charophytes as a sister of the Zygnematophyceae. Since the realization that the Embryophytes emerged within the green algae, some authors are starting to include them. The completed clade that includes both green algae and embryophytes is monophyletic and is referred to as the clade Viridiplantae and as the kingdom Plantae. The green algae include unicellular and colonial flagellates, most with two flagella per cell, as well as various colonial, coccoid (spherical), and filamentous forms, and macroscopic, multicellular seaweeds. There are about 22,000 species of green algae, many of which live most of their lives as single cells, while other species form coenobia (colonies), long filaments ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AlgaeBase
AlgaeBase is a global species database of information on all groups of algae, both seaweed, marine and freshwater algae, freshwater, as well as sea-grass. History AlgaeBase began in March 1996, founded by Michael D. Guiry, Michael Guiry. Text was copied from this source, which is available under aAttribution 4.0 International (CC BY 4.0)licence. (Sehere. By 2005, the database contained about 65,000 names. In 2013, AlgaeBase and the Flanders Marine Institute (VLIZ) signed an end-user license agreement regarding the intellectual property, Electronic Intellectual Property of AlgaeBase. This allows the World Register of Marine Species (WoRMS) to include taxonomic names of algae in WoRMS, thereby allowing WoRMS, as part of the Aphia database, to make its overview of all described marine species more complete. Synchronisation of the AlgaeBase data with Aphia and WoRMS was undertaken manually until March 2015, but this was very time-consuming, so an online application was developed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National University Of Ireland, Galway
The University of Galway () is a public research university located in the city of Galway, Ireland. The university was founded in 1845 as "Queen's College, Galway". It was known as "University College, Galway" (UCG) () from 1908 to 1997 and as "National University of Ireland Galway" (NUI Galway) () from 1997 to 2022. In September 2022, it changed its name to "University of Galway". The University of Galway is a member of the Coimbra Group, a network of 40 long-established European universities. History The university was established in 1845 as Queen's College, Galway, together with Queen's College, Cork, and Queen's College, Belfast. It opened for teaching on 30 October 1849 with 68 students. In 1850, it became part of the Queen's University of Ireland, and its degrees were conferred in the name of that university. Located close to the city centre, the university campus stretches along the River Corrib. The oldest part of the university, the Quadrangle with its ''Aula Maxi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
