What is zoospore in Oedogonium?

Oedogonium. Oedogonium reproduces asexually by fragmentation and by producing large, wallless zoospores with an eyespot, contractile vacuoles, and a ring of flagella. The motile zoospores are released from the parent cells and move to a suitable substrate.

What is the reproductive structure of Oedogonium?

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 many types of reproduction are in Oedogonium?

Oedogonium reproduces by all the three means: vegetative, asexual and sexual.

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).

What is zoospore formation?

A zoospore is a motile asexual spore that uses a flagellum for locomotion. Also called a swarm spore, these spores are created by some protists, bacteria, and fungi to propagate themselves.

What is Oedogonium in biology?

Oedogonium is a genus of filamentous, free-living green algae, first discovered in the fresh waters of Poland 1860 by W. Hilse and later named by German scientist K. E. Hirn.

What is cap cell in Oedogonium?

Oedogonium has an unbranched and filamentous body. It has a reticulated or ribbon-shaped chloroplast. It has easily identifiable distinctive rings present at the apical ends of certain cells that are known as the cap cells. Moreover, each cellular division creates a new ring on the cap cells.

What is Thallus in Oedogonium?

Vegetative Body of Oedogonium: The thallus is is an unbranched filament consisting of a single row of cylindrical cells joined end on end. The filament shows distinction into base and apex. The basal cell becomes modified and forms a holdfast by means of which the thallus fixes itself to the substratum.

What is meant by Oedogonium?

Definition of Oedogonium : a genus (the type of the family Oedogoniaceae) of freshwater green algae that have long unbranched filaments usually free-floating when mature but attached by special basal cells when young.

What type of life cycle is seen in Oedogonium?

haplontic
The life cycle of Oedogonium is haplontic. The egg from the oogonia and the sperm from the antheridia fuse and form a zygote which is diploid (2n). The zygote then undergoes meiosis and reproduces asexually to form the filamentous green alga which is haploid (1n).

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 zoospore with example?

Zoospores are asexual spores that are motile in nature. They use flagella for locomotion. They are the means of asexual reproduction. Examples include spores of some algae, fungi and protozoans.

What does zoospore mean?

an independently motile spore
Definition of zoospore : an independently motile spore especially : a motile usually naked and flagellated asexual spore especially of an alga or lower fungus.

What is Oedogonium life cycle?

The life cycle of Oedogonium is haplontic. The egg from the oogonia and the sperm from the antheridia fuse and form a zygote which is diploid (2n). The zygote then undergoes meiosis and reproduces asexually to form the filamentous green alga which is haploid (1n).

What is the kingdom of Oedogonium?

Plant
Archaeplastida
Oedogonium/Kingdom

What is apical cap in Oedogonium?

Definition of apical cap : one of a series of bands resembling collars formed at the ends of the cells of green algae of the genus Oedogonium as a result of cell divisions.

What is cell division in Oedogonium?

In cell division the protoplasm divides, the first sign of which is the division of nucleus. In cell elongation the cell elongates gradually and uniformally. The method of cell division and growth of cell wall is unique and peculiar in Oedogonium. The cell wall does not elongate in the usual way.

Which chloroplast is found 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.

What is the classification of Oedogonium?

Chlorophycean green algaeOedogonium / Class

How is zoospore formed?

Gene Ontology Term: zoospore formation The process in which a diploid cell undergoes meiosis, and the meiotic products acquire specialized features of asexual motile mononucleate flagellated spores called zoospores.

What is Thallus structure of Oedogonium?

What is dwarf male in Oedogonium?

Dwarf males are small, short, antheridium-producing filaments attached near the oogonia (female sex organ). These dwarf males are derived by repeated cell division of multiflagellate androspores. When an oogonial mother cell divides it forms a swollen oogonium bound by a supporting cell.

How are zoospores formed in Oedogonium?

Zoospore formation in Oedogonium sp. During asexual reproduction. – YouTube The lower most cap help to break the thallus, and help to liberate the zoospore, a single zoospore formed from a zoo-sporangium. The lower most cap help to break the thallus, and help to liberate the zoospore, a single zoospore formed from a zoo-sporangium.

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.

What happens in a zoosporangium?

The cell which functions as zoosporangium gets filled with abundant reserve food and a slight contraction of the protoplast from the cell wall takes place (Fig. 5 A, B). The central vacuole disappears the chloroplast frees itself from one end of the cell and becomes conical.

What is the difference between oedogonium and androsporangia?

The dwarf males are formed by androspores which are produced in androsporangia. If androsporangia and oogonia are formed on same plant, the Oedogonium forms are called gynandrosporous e.g., O. concatinatum.