Which type of algae is Vaucheria?
Vaucheria is a genus of Xanthophyceae or yellow-green algae. It is one of only two genera in the family Vaucheriaceae. The type species of the genus is Vaucheria disperma. Vaucheria exhibits apical growth from the tip of filaments forming mats in either terrestrial or freshwater environments.
What fungal characteristics does Vaucheria have?
Vaucheria species are characterized by multinucleate tubular branches that lack cross walls except when associated with reproductive organs or when injured. Food is stored as oil globules. Asexual reproduction is by motile multiflagellate zoospores and nonmotile aplanospores.
How zoospores are formed in algae?
The zoospores are flagellated asexual structures. The zoospores are formed in reproductive body the zoosporangium. Aplanospores are non-motile structures, in which protoplasm gets surrounded by thin cell wall. The aplanospores on release form new plants, e.g., Ulothrix.
What is the shape of antheridium of Vaucheria?
The nuclei of antheridium aggregate in the centre and divide mitotically. Each nucleus along with some cytoplasm metamorphoses into single spindle shaped biflagellate antherozoid (Fig. 3.87E).
Is Vaucheria unicellular or multicellular?
The thallus of Vaucheria is branched, non-septate and multinucleate structure which appears like single large cell but Vaucheria cannot be considered as single cell. As in multicellular forms mitotic divisions take place increasing the number of nuclei. The apical growth takes place.
What is the kingdom of Vaucheria?
Vaucheria sessilis (Vaucher) De Candolle. Taxonomic Serial No.: 2114 (Download Help) Vaucheria sessilis TSN 2114. Taxonomy and Nomenclature. Kingdom: Chromista.
Where is zoospore found in algae?
The zoospores of aquatic fungi and funguslike organisms swim in the surrounding water by means of one or two variously located flagella (whiplike organs of locomotion).
Which fungi produce zoospores?
Zoospores are produced by Blastocladiomycota, Chytridiomycota, Neocallimastigomycota, and diverse zoosporic fungi of uncertain taxonomic assignment included in the Cryptomycota (Chapter 1).
What is structure of vaucheria zoospore?
Each zoospore is large yellow green, oval structure. It has a central vacuole which has cell sap and may be traversed by cytoplasmic strands. The protoplasm outer to vacuole has many nuclei towards the walls and chromatophores towards vacuoles. Two flagella arise opposite to each nucleus.
Which algae is Synzoospore found?
Note: The formation of synzoospore occurs only in the vaucheria. Vaucheria is a member of class Xanthophyceae (yellow-green) algae. The body of Vaucheria consists of an aseptate, tubular, irregularly branched, coenocytic filament. It is usually attached to the substratum by means branched and colourless holdfast.
What is structure of Vaucheria zoospore?
Is Vaucheria a single celled organism?
Vaucheria is a single-celled organism. Explanation: Vaucheria has a very large macroscopic filamentous form. It is widely distributed on moist soil and water. Explanation: Chrysamoeba is a strongly amoeboid genus with flagella.
Is Vaucheria in the Chlorophyceae?
Since long time the genus Vaucheria has been included in the Chlorophyceae. This arrangement was doubted by Bohin (1897), Printz (1927), Fritsch (T935), and Fldmann (1946). In spite of his own dislikeness, Fritsch placed Vaucheria in the family Vaucheriaceae under the order Siphonales belonging to the Chlorophyceae.
What are the characteristics of Vaucheria?
Vaucheria. Plants are coenocytic, balloon-shaped to filamentous, with differentiation of rhizoidal and assimilative portions; chromotophores peripheral, small, sometimes with pyrenoid-like structures. Food reserve is oil. Asexual reproduction is by zoospores or aplanospores and sexual reproduction iso-, aniso-, or oogamous.
Is Vaucheria thallus haploid or aseptate?
Vaucheria thallus is haploid, Aseptate, branched, tubular and coenocytic structure. In vaucheria vegetative reproduction, occurs by fragmentation, and asexual reproduction occurs by zoospores in aquatic and alpanospores in terrestrial.
What is the mode of reproduction in Vaucheria?
Reproduction in vaucheria occurs by all three means, vegetative, asexual and sexual reproduction. Vegetative reproduction in vaucheria occurs by the accidental breakage of the vegetative filament, in which septa are formed in the injured region of the filament.