Search results
Results from the WOW.Com Content Network
Chlorophytes are eukaryotic organisms composed of cells with a variety of coverings or walls, and usually a single green chloroplast in each cell. [4] They are structurally diverse: most groups of chlorophytes are unicellular, such as the earliest-diverging prasinophytes, but in two major classes (Chlorophyceae and Ulvophyceae) there is an evolutionary trend toward various types of complex ...
Temperature, water currents and waves affect their metabolism and morphology, and branching patterns. At 15–20 °C branches appear alternate, they can also appear completely absent in temperatures below 25 °C. [3] Cladophora form a branched filamentous chlorophyte structure with large cylindrical cells forming long, regularly branched ...
The distinctions between the genera are artificial, since they do not correspond with monophyletic groupings; [7] occasionally, Ankistrodesmus is found as single cells. [6] Other similar genera include Keratococcus and Elakatothrix. [3] Identification of species chiefly depends on details of the size and shape of cells. [2]
They usually have a cell wall that contains cellulose, and food is stored in the form of starch. However, these characteristics are also shared with other eukaryotes. The main evidence that the Archaeplastida form a monophyletic group comes from genetic studies, which indicate their plastids probably had a single origin. This evidence is disputed.
Sponges (phylum Porifera) have a large diversity of photosymbiote associations. Photosymbiosis is found in four classes of Porifera (Demospongiae, Hexactinellida, Homoscleromorpha, and Calcarea), and known photosynthetic partners are cyanobacteria, chloroflexi, dinoflagellates, and red and green (Chlorophyta) algae.
A sophisticated process, and additional cost, was required to harvest the crop and for Chlorella to be a viable food source, its cell walls would have to be pulverized. The plant could reach its nutritional potential only in highly modified artificial situations. Another problem was developing sufficiently palatable food products from Chlorella ...
Caulerpa species support their large cell size by having the cytoplasm circulate constantly, supported by a network of microtubules.This behavior was known in 1967. [10]The cytoplasm does not leak out when the cell is cut.
[12] [13] The cell walls of green algae usually contain cellulose, and they store carbohydrate in the form of starch. [14] All green algae have mitochondria with flat cristae. When present, paired flagella are used to move the cell. They are anchored by a cross-shaped system of microtubules and fibrous strands.