As an aid to his own studies on algal taxonomy and morphology, Fritsch brought together published illustrations under the names of the species. Bacillariophyceae (= diatoms): These are yellow-green-brown or olive green in colour. D. Thallus organization. Classification: F.E. ii. Classification of Algae by Fritsch A famous botanist F.E. Oscillatonia, Nostoc, etc. The structure and reproduction of the algae Hardcover â January 1, 1965 by Felix Eugene Fritsch (Author) See all formats and editions Hide other formats and editions. 4. ï One of the best known algal classification was proposed by Fritsch who divided them into 11 classes (1945). in classification proposed by him and his followers. Spirogyra, Oedogonium, Ulothrix, Vaucheria, Chara, etc. Get a printable copy (PDF file) of the complete article (2.9M), or click on a page image below to browse page by page. In 1955 C. M. Smith has classified algae into seven divisions, each of which contains one or more classes. Algae: Classification by Fritsch part 1(upto order) - YouTube Fritsch (1944-45) categorized algae into eleven groups in his book âStructure and Reproduction of Algaeâ that are based on the given characteristics: A. Pigmentation. Phaeophyceae or brown algae, e.g. Plant Science Life Science Electron Microscope Images Plants Learning Study Blue Nails Studio Investigations. Xanthophyceae 3. Chrysophyceae 4. DOCX, PDF, TXT or read online from Scribd, 67% found this document useful, Mark this document as useful, 33% found this document not useful, Mark this document as not useful, Save Classification Proposed by Fritsch For Later, The most comprehensive and authorative classification of algae was given by F.E Fritsch (, , 1948) in his book ‘ The Structure and Reproduction of the Algae’. Nature of Reserve Food: The primary product of photosynthesis i.e., starch is same in all groups of ⦠classification of algae was given by F.E Fritsch (1935) in his book âThe Structure and Reproduction of the Algaeâ. ï Classification is based on pigments, flagella and reserve food material. Chlorophyceae 2. Myxophyceae or blue-green algae, e.g. They are Chlorophyceae, Xanthophyceae, Chrysophyceae, Bacillariophyceae, Cryptophyceae, Dinophyceae, Chloromonodineae, Euglinineae, Phaeophyceae, Rhodophyceae and Myxophyceae (Cyanophyceae). The classification of algae into taxonomic groups is based upon the same rules that are used for the classification of land plants, but the organization of groups of algae above the order level has changed substantially since 1960. 14. Fritsch proposed a classification for algae based on pigmentation, types of flagella, reserve food materials, thallus structure and reproduction. Examples are Chlamydomonas, Spirogyra, and Chara; Phaeophyceae â Also called as brown algae, they are predominantly marine. His classification of algae is mainly based upon characters of pigments, flagella and reserve food material. Ø Main pigment is xanthophylls which imparts brown or red colour. B. Flagellar arrangement. Xanthophyceae or yellow—green algae e.g. Methods: A systematic literature search was conducted in PubMed and Embase for studies comparing SLICC'12 ⦠Nostoc is a Colonial, filamentous algae seen as mucilaginous balls that belongs to the class cyanophyceae (Blue green algae) ⢠Heterocysts are Large sized, colourless, spherical, thick walled cells present in the filaments of blue green algae like Nostoc ⢠Position intercalary or terminal His classification was based on such criteria as pigmentation, types of flagella, assimilatory products, thallus structure and methods of reproduction. Fritsch classification of algae One of the best known algal classification was proposed by Fritsch who divided them into 11 classes(1945). Batrachospermun, Polysiphonia, etc. F.E. Classification of Algae by Fritsch. Xanthophyceae 3. Objective: To evaluate the performance in classifying systemic lupus erythematosus by the 2012 Systemic Lupus International Collaborating Clinics criteria (SLICC'12), versus the revised American College of Rheumatology criteria from 1997 (ACR'97) in adult and juvenile SLE patients. Division-level classification, as with kingdom-level classification, is tenuous for algae. Sep 7, 2014 - This Pin was discovered by Biology 4u. His classification of algae is mainly based upon characters of pigments, flagella and reserve food material. Full text Full text is available as a scanned copy of the original print version. Reproduction by vegetative , asexual and sexual methods. Ø The mitotic cells usually have a single flagellum, Ø Sexual reproduction by fusion of gametes, ü Centrales e.g., Cyclotella, Chaetoceras, ü Pennales e.g., Grammatophora, Navicula, Pinnularia. Chiefly consists of Diatoms; terrestrial, fresh water or saline water; flagellated or non-flagellated; unicellular or multicellular, colonial or filamentous; cell wall made of pectin with deposition of silica particles on the surface; of the pigments carotin and Xanthophyll are present in abundance; special method of sexual reproduction; oil and leucosin (a complex carbohydrate) are reserve food. Algae Classification. Class consists of only one order ‘ Chloromonadales’ e.g., Trentonia, Ø One or two flagella that arise from canal like invaginatrion at the, Ø The chrmatophore contain main pigment fucaxanthin besides the others, Ø Lower forms have naked pyrenoid like bodies. He divided it into 11 classes based on pigments,reserve food materials and flagellar types. Fritsch (1935) classified algae into following 11 classes, based on pigmentation, reserve food material, flagellation and reproduction. Botrydium. Article by Cheri Dennen. Pyrophyta: Chiefly marine; unicellular; presence of two unequal flagella; yellowish green or yellowish ⦠Fritsch (1935, 1945) in his book âThe Structure and Reproduction of the Algaeâ proposed a system of classification of algae. Discover everything Scribd has to offer, including books and audiobooks from major publishers. Male gametes are similar to zoospore but smaller in size. Bacillariophyceae or golden-brown algae e.g. Chrysophyceae 4. ü Cryptomonadales e.g., Cryptomonas, Rhodomonas, Cyanomonas. On the basis of photosynthetic pigments algae classified into three classes. E. Reproduction Xanthophyceae 3. The division consists of three classes, of which Bacillariophyceae is the main plants consisting of this class are known as Diatoms or golden brown algae; the yellow pigment diatomin is always present with chlorophyll. CLASSIFICATION OF ALGAE. Chlorophyceae (green algae) Phaeophyceae (brown algae) Rhodophyceae (red algae). Most live in fresh water, but some are found in marine and soil habitats. 1.1 ClASSIFICAtIon The classification of algae is complex and somewhat controversial, especially concerning the blue-green algae (Cyanobacteria), which are sometimes known as blue-green bacteria or Cyanophyta and sometimes included in the Chlorophyta. His classification, was based on such criteria as pigmentation, types of flagella, assimilatory products, thallus, Class I: Chlorophyceae ( Isokontae or Green algae), Pigments are chlorophyll a and b, carotenoids and xanthophylls. 3. After his death this was continued by Dr J.W.G.Lund at the Freshwater Biological Association and became The Fritsch Collection of Illustrations of ⦠The class chlorophyceae is divided into nine orders, Class II: Xanthophyceae ( Heterokontae or Yellow-green algae), Cell wall with pectic substances and cellulose, Typical eukaryotic cell with anteriorly inserted 2 unequal flagella, shorter whiplash, Order I Heterochloridales e.g., Heterochloris, Chloramoeba, Order II Heterococcales e.g., Myxochloris, Halophaera, Order III Heterotrichales e.g., Tribonema, Microspora, Order IV Heterosiphonales e.g., Botrydium, Dominant pigment is Phycochrysin gives brown or orange colour, Chromatophores have naked pyrenoid like bodies, Food reserve is chrysolaminarin and leucosin, Motile cells have 2 anteriorly inserted equal or unequal flagella, Sexual reproduction rare , when present isogamous, Order I Chrysomonadales e.g., Chrysococcus, Chrysodendron, Chromulina, Order II Chrysosphaerales e.g., Chrysosphaera, Echinochrysis, Bacillariophyceae ( Diatoms , yellow or golden brown algae), Ø The chromatophores have pyrenoids and the photosynthetic products are fat, Ø Cell wall is pectic and silicified and variously ornamented. Xanthophyte chloroplasts contain the photosynthetic pigments chlorophyll a, chlorophyll c, β-carotene, and the carotenoid diadinoxanthin. These topics are not covered in ⦠They vary from single-celled flagellates to simple colonial and filamentous forms. Eleven classes proposed by Fritsch are as follows: 1. Classification of Algae No easily definable classification system acceptable to all exists for algae because taxonomy is under constant and rapid revision at all levels following every day new genetic and ultrastructural evidence. Chlorophyta, Rhodophyta etc.) The algae have broadly been divided by F. F. Fritsch in 1935 into eleven classes according to their colour: i. Chlorophyceae or green algae, e.g. Fctocarpus, Laminaria, Dictyota, Fucus, etc. Fritsch (1935, 1945 and his followers) opined that algae is itself equivalent to a division, and therefore it can only be divided into classes (=phyceae). A brief account of this classification is given below: Cyanophyta or blue green algae-inhabitants of moist soil and rocks, fresh water or saline water; unicellular or colonial; plastids not well-defined; presence of nucleoplasm in the centre of the cell and chromoplasm in the periphery; nucleus is primitive; phycocyanin is the chief pigment but sometimes phycoerythrin may be present; sexual reproduction and flagellated cells are always absent; reproduction is vegetative or asexual by resting spores; glycogen is the reserve food. 1. For example, some phycologists place the classes Bacillariophyceae, Phaeophyceae, and Xanthophyceae in the division Chromophyta, whereas others place each class in separate ⦠x. 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