Animalscaretips
Desmids are characterized by extensive variation in cell shape and are found worldwide, usually in acid bogs or lakes. Since most species have a limited ecological range, the presence of specific desmids is helpful in characterizing water samples.
- Where can you find desmids?
- Where is Cosmarium found?
- How does a desmid move?
- Are diatoms and desmids same?
- What do desmids have in common?
- Is Cosmarium a Desmid?
- Is Cosmarium green algae?
- What is unique about Closterium?
- Which group includes diatoms and desmids?
- What does desmid look like?
- Is desmid photosynthetic?
- Are desmids golden algae?
- Are desmids protists?
- Why is BGA called cyanobacteria?
- What is Epitheca and Hypotheca?
Where can you find desmids?
Desmids can be found in fresh water, preferably clean, clear water. A few species occur in (slightly) brackish water. They can be found at the bottom, on aquatic plants or free-floating in the water.
Where is Cosmarium found?
Comments: Cosmarium is found mainly in acidic, oligotrophic, aquatic environments. Occasionally subaerial or in basic, eutrophic waters. Several species are common with cosmopolitan distributions; others rarely collected, with very restricted distributions.
How does a desmid move?
Many Desmids secrete mucilage from pores in the cell wall. With this they can move towards light or avoid too bright light. ... Desmids reproduce by fission, the cells divide. It is an interesting to see this whole process in desmids.
Are diatoms and desmids same?
Additional Information: Difference between Diatoms and Desmids; - Diatoms are stramenopila algae whereas Desmids are chlorophyte. - The cell membrane of diatoms consists of silica whereas that of desmids consists of cellulose and pectins (like plants) . ... - They are Free swimming types of algae.
What do desmids have in common?
Desmids are green algae, which most botanists consider to be the earliest-evolved plants. One of the ways that we can tell they are closely related to plants is they share the same photosynthetic pigments -- chlorophylls a and b -- and so have the same familiar green glow.
Is Cosmarium a Desmid?
Desmids (e.g., Cosmarium, Closterium) are also common, as are epiphytes (e.g., Gomphonema, Coconeis) of water willow and some of the larger filamentous algae (e.g., Cladophora).
Is Cosmarium green algae?
Cosmarium is a genus of fresh water organisms belonging to the Charophyta, a division of green algae from which the land plants (Embryophyta) emerged.
What is unique about Closterium?
Closterium cells are crescent-shaped or elongate and lack spines. Some are quite straight and needle-like, while others are much broader with curved ends. The ends of the cell are usually tapered and may be pointed or rounded. Each semicell has a single axial, ridged chloroplast with at least one pyrenoid.
Which group includes diatoms and desmids?
Chrysophytes come under the kingdom of Protista. This group includes diatoms and golden algae (desmids). They are found in freshwater as well as in marine environments.
What does desmid look like?
desmid, (order Desmidiales), order of single-celled (sometimes filamentous or colonial) microscopic green algae, comprising some 5,000 species in about 40 genera. ... One of the more common desmid genera, the sickle-shaped Closterium, often contains gypsum crystals in cell vacuoles.
Is desmid photosynthetic?
Desmids are photosynthetic green algae that are composed of two "semicells," connected at a central isthmus. Some desmids have elongate appendages, others are more round, and still others form filamentous strands. Several forms of desmids may be present in a single sample of water.
Are desmids golden algae?
Desmids are also known as golden algae or golden-brown algae because of their distinctive golden colour, which is caused by the pigment fucoxanthin and the use of oil droplets as food reserves. ... This class of algae includes approximately 33 different genera and 1200 different species.
Are desmids protists?
(Project Update: Diatoms & Desmids of the U.S.A.) 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.
Why is BGA called cyanobacteria?
Cyanobacteria appear coloured because they contain the photosynthetic pigments chlorophyll (green) and photocyanin (blue). ... This means that they can produce their own food.
What is Epitheca and Hypotheca?
is that epitheca is (microbiology|planktology) the upper half of the theca of a thecate protist such as a diatom or dinoflagellate while hypotheca is (microbiology|planktology) the lower or posterior half of the theca of a thecate protist such as a diatom or dinoflagellate.
