Is Cosmarium a desmid?
The desmid genus Cosmarium, with the apt species name reniforme, the semi-cells are obviously kidney shaped in face view as they are usually seen. In apical view elliptical. Cells without their chloroplast content are often found, sometimes this has been depleted by fungi.
What type of protist is a desmid?
Desmid, (order Desmidiales), order of single-celled (sometimes filamentous or colonial) microscopic green algae, comprising some 5,000 species in about 40 genera. Desmids are sometimes treated as a family (Desmidiaceae) of the order Zygnematales.
What kingdom does desmids belong to?
The beautiful diatoms and desmids are placed under chrysophytes of the Kingdom Protista. Chrysophytes belong to the kingdom Protista. The group contains about 5500 species. They occur all together in aquatic and moist terrestrial habitats.
Is desmid prokaryotic or eukaryotic?
Eukaryote: a desmid (green alga) Closterium sp.
Is Desmid a protist?
Desmids are an order of single celled green algae with approximately 40 genera and 6,000 species. However, as more is learned about their internal chemistry, it is becoming more common to place them in the Kingdom Protista with all other forms of micro-algae.
What are the two types of protist?
- Animal-like protists are called protozoa. Most consist of a single cell.
- Plant-like protists are called algae. They include single-celled diatoms and multicellular seaweed.
- Fungus-like protists are molds. They are absorptive feeders, found on decaying organic matter.
Are Desmid a protist?
How are desmids recognized?
Desmids can be recognised by their symmetry. Two, mostly ornamented semi-cells are joined by a narrow connection called the isthmus. Many Desmids secrete mucilage from pores in the cell wall. With this they can move towards light or avoid too bright light.
Are desmids heterotrophic?
A desmid is a single-celled green algae, which can be found only in freshwaters. Photoheterotroph â€“ These heterotrophs use light for energy but cannot use carbon dioxide as their carbon source.
Are desmids protozoans?
Note – Although Euglena and other green-colored, flagellated single-celled organisms commonly referred to as euglenoids are sometimes categorized within the phylum Euglenophyta (Euglenophycophyta); for this class, they will be categorized with the protozoa in the phylum Euglenozoa.
Is there a checklist for the genus Cosmarium?
Background: Despite the many problems involving taxonomy of the genus Cosmarium, the present checklist intends to provide an overview of the genus Cosmarium in the Brazilian territory, with respective references, in order to facilitate future ecological and taxonomical studies involving this ubiquitous genus.
Where are desmids most likely to be found?
Desmids are more common in ponds and streams that have low conductance and moderate nutrient levels, and often intermingle with macrophytes. This is the largest desmid genus, containing more than 1000 species. It is difficult to make generalizations about the morphological diversity that is exhibited wihin the genus.
What kind of environment does Cosmarium live in?
Cosmarium is widespread in North America and most common in acidic, oligotrophic, aquatic environments. Some species occur in subaerial habitats or in alkaline, eutrophic ponds and lakes. There are many cosmopolitan species.
How many species of Cosmarium are there in Brazil?
Diversity of Cosmarium in Brazil is represented by 650 taxa, including species, varieties and taxonomic formae that were presently listed and referenced. Present status of the genus and some implications for its future studies in Brazil are discussed along the taxonomical context.