How is Oedogonium unique?
The morphology of Oedogonium is unique, with an interior and exterior that function very differently from one another and change throughout its life cycle. These protists reside in freshwater ecosystems in both hemispheres and are both benthic and planktonic in nature.
Table of Contents
How do you identify Oedogonium?
Oedogonium is an unbranched, filamentous green alga that is easily identified by the distinctive rings at the apical ends of certain cells. Each cellular division creates a new ring on the cap cell.
What is Oedogonium in biology?
Oedogonium refers to filamentous macroalgae which are the genus of the green freshwater.
Do Oedogonium have flagella?
Oedogonium. Oedogonium reproduces asexually by fragmentation and by producing large, wallless zoospores with an eyespot, contractile vacuoles, and a ring of flagella.
What type of life cycle is seen in Oedogonium?
In Oedogonium the thallus is haploid and the life cycle is haplontic type. The diploid stage in life cycle is only zygote. It occurs for a short period. The zygote or oospore undergoes meiosis to make four meiozoospores which again form haploid Oedogonium thalli.
What is Oedogonium vegetative structure?
Structure. Oedogonium forms elongate filaments of cells, most of which are non-flagellated, cylindrical and have a cell wall that contains both cellulose and chitin. These cells are vegetative, i.e. are not associated with reproduction but only associated with photosynthesis and growth of the filament.
What is the morphology of Oedogonium?
Oedogonium filaments are typically unbranched and only one cell thick. Each cylindrical cell of the filament, with the exception of the basal cell that serves as a rootlike holdfast, contains a netlike chloroplast and a large central vacuole. Oedogonium filaments with visible oogonia (swollen cells).
Where is Oedogonium found?
Found in a habitat similar to Bulbochaete, which is in freshwater habitats such as ponds, lakes, streams, or marshes. It is sometimes epiphytic on submerged plants.
How does Oedogonium reproduce?
Reproduction. Oedogonium reproduces asexually via mobile zoospores and sexually via sperm, oogonia and zygospores. Sperm are released from parental cells and are chemo-attracted to the oogonia that house an egg. A pore in the oogonium cell wall allows the sperm to enter the oogonium and fertilize the egg.
How do Oedogonium reproduce?
Oedogonium reproduces asexually via mobile zoospores and sexually via sperm, oogonia and zygospores. Sperm are released from parental cells and are chemo-attracted to the oogonia that house an egg. A pore in the oogonium cell wall allows the sperm to enter the oogonium and fertilize the egg.
Which type of chloroplast is seen in Oedogonium?
reticulated type
The cells of Oedogonium are cylindrical in shape. They contain a parietal, net-like chloroplast with several pyrenoids. It has a reticulated type of chloroplast present.
Is Oedogonium unicellular or multicellular?
Each nucleus becomes surrounded by some cytoplasm and metamorphoses into an antherozoid. Thus two antherozoids are developed from each antheridium. The antherozoids are unicellular, uninucleate, multiflagellate and yellowish in colour.
Does Oedogonium have chlorophyll?
Like most green algae, and like all plants, Oedogonium has both chlorophyll a and b, stores carbohydrates as starch and has cellulose cell walls.
