Search results
Results from the WOW.Com Content Network
Chlamydomonas (/ ˌ k l æ m ɪ ˈ d ɒ m ə n ə s,-d ə ˈ m oʊ-/ KLAM-ih-DOM-ə-nəs, -də-MOH-) is a genus of green algae consisting of about 150 species [2] of unicellular flagellates, found in stagnant water and on damp soil, in freshwater, seawater, and even in snow as "snow algae". [3]
Asexual reproduction occurs when the cell protoplast divides to form two, four, or eight daughter cells, with cell walls forming while still in the parent cell wall. Before cell division, the flagella usually disappear. Daughter cells are typically liberated when the parent cell wall gelatinizes, or through a rupture in the parent cell wall.
Chlamydomonas moewusii is a heterothallic species, exhibiting distinct behavioral differences between the gametes of its two mating types. When suspensions containing 'plus' and 'minus' gametes are mixed under light, they form clumps that eventually separate into pairs after a few minutes.
Chlamydomonas reinhardtii is a single-cell green alga about 10 micrometres in diameter that swims with two flagella. It has a cell wall made of hydroxyproline -rich glycoproteins , a large cup-shaped chloroplast , a large pyrenoid , and an eyespot apparatus that senses light.
Chlorophyceae can reproduce both asexually and sexually. In asexual reproduction, cells may produce autospores, aplanospores or zoospores. Autospores (by definition) lack flagella and appear as smaller versions of vegetative cells. Zoospores typically have an elongate, hydrodynamic shape and often have eyespots.
The outcome of sexual reproduction most often is the production of resting spores that are used to survive inclement times and to spread. There are typically three phases in the sexual reproduction of fungi: plasmogamy, karyogamy and meiosis. The cytoplasm of two parent cells fuse during plasmogamy and the nuclei fuse during karyogamy.
Chlamydomonas elegans is a unicellular organism with ellipsoidal-ovoid cells, which are usually flattened on one side, and rounded at the ends. Cell bodies are 23–30 μm long and 13–15 μm wide. The cell wall is thin, lacking a papilla. The two flagella extend from the anterior end of the cell and slightly longer than the cell body. The ...
The name Chlamydomonas nivalis is of compound Greek and Latin origin. Chlamydomonas is ultimately derived from the Ancient Greek χλαμύς (khlamús, "cloak, mantle") and μονάς (monás, "solitary"), [8] while nivalis, from the Latin nivālis, translates to 'found growing in or near snow', as this species of algae are only found associated with snow or near snowy areas.