fritsch classification of algae

iv. 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. Chiefly marine; unicellular; presence of two unequal flagella; yellowish green or yellowish brown pigments present; sexual reproduction is rare; reserve food is starch or oil. Bacillariophyceae 5. 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. classification of algae was given by F.E Fritsch (1935) in his book ‘The Structure and Reproduction of the Algae’. Heterothallic or dioecious species are of two types: macrandrous (where male and female filaments are of normal size) and nannandrous type (where male is very small i.e., dwarf male or nannandrium and the female one is of normal size).Chlorophyceae. in classification proposed by him and his followers. There are … Ø Main pigment is xanthophylls which imparts brown or red colour. This lineage eventually led to the higher land plants. “The structure and reproduction of the Algae”. CLASSIFICATION • Fritsch’s Classification of Algae: • F.E. Classification is based on pigments, flagella and reserve food material. Eleven classes proposed by Fritsch are as follows: 1. Cryptophyceae 6. Diatomin is … Chlorophyceae 2. Examples of algae include diatoms, kelp, and spirogyra. The three most prominent groups of algae are the brown algae, the red algae, and the green algae, amongst which some of the most complex forms belong to green algae. The structure and reproduction of the algae Hardcover – January 1, 1965 by Felix Eugene Fritsch (Author) See all formats and editions Hide other formats and editions. Terms of Service Privacy Policy Contact Us, Notes on Botany for School and College Students, Copyright infringement takedown notification policy, Copyright infringement takedown notification template, Chlorophyceae or the Green Algae | Botany, Bacillariophyceae: Occurrence and Vegetative Body | Algae | Botany, Plant – Water Relations | Plant Physiology. F.E. 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. Spirogyra, Oedogonium, Ulothrix, Vaucheria, Chara, etc. They vary from single-celled flagellates to simple colonial and filamentous forms. Fritsch (1935) classified algae into following 11 classes, based on pigmentation, reserve food material, flagellation and reproduction. Reproduction by vegetative , asexual and sexual methods. On the basis of photosynthetic pigments algae classified into three classes. Fritsch Classification of Algae. Class 1. Algae: Classification by Fritsch part 1(upto order) - YouTube Because of the range of diversity amongst algae, a scientist by the name of Fritsch attempted to classify algae into eleven classes in 1935. 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. His classification was based on such criteria as pigmentation, types of flagella, assimilatory products, thallus structure and methods of reproduction. 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. Xanthophyte chloroplasts contain the photosynthetic pigments chlorophyll a, chlorophyll c, β-carotene, and the carotenoid diadinoxanthin. Xanthophyceae 3. As an aid to his own studies on algal taxonomy and morphology, Fritsch brought together published illustrations under the names of the species. His classification of algae is mainly based upon characters of pigments, flagella and reserve food material. 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. 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). Classification of Algae. Eleven classes proposed by Fritsch are as follows: 1. 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. Fritsch classification of algae One of the best known algal classification was proposed by Fritsch who divided them into 11 classes(1945). Division-level classification, as with kingdom-level classification, is tenuous for algae. Classification F.E. Found in fresh water or stagnant water or on moist soil; cells flagellated or naked; coloured plastids promi­nent; cell divisions longitudinal; reserve food is paramyleum (a kind of carbohydrate). Xanthophyceae 3. Phaeophyceae or brown algae, e.g. Fritsch’s classification: F.E.Fritsch (1935, 1945) proposed a most comprehensive and anthroritative classification in his book “structure and reproduction of algae” . Classification of Algae by Fritsch A famous botanist F.E. Article by Cheri Dennen. Bacillariophyceae (= diatoms): These are yellow-green-brown or olive green in colour. He published his classification in the book “The structure and reproduction of the Algae” (1935). 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. https://www.plantscience4u.com/2014/04/fritsch-classification-of-algae.html  Classification is based on pigments, flagella and reserve food material. Nature of Reserve Food: The primary product of photosynthesis i.e., starch is same in all groups of … For example, some phycologists place the classes Bacillariophyceae, Phaeophyceae, and Xanthophyceae in the division Chromophyta, whereas others place each class in separate … Algae are some of the most robust organisms on earth and are able to grow in a wide range of conditions. Fritsch proposed a classification for algae­ based on pigmentation, types of ­flagella, ­reserve food materials, thallus­ structure and ­reproduction. It is the largest class of algae; 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’. Chlorophyceae 2. Yellow-green algae or the Xanthophyceae (xanthophytes) are an important group of heterokont algae. xi. Chlorophyceae ( Isokontae) Generally algae are fresh water and chlorophyllous thallophytes. Ø Reserve foods are laminarin ( Polysaccharide). E. Reproduction Discover (and save!) Classification of Algae by Fritsch. Pyrophyta: Chiefly marine; unicellular; presence of two unequal flagella; yellowish green or yellowish … ix. Xanthophyceae or yellow—green algae e.g. 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. Get a printable copy (PDF file) of the complete article (2.9M), or click on a page image below to browse page by page. D. Thallus organization. Chiefly marine; plant body is very complex; main pigment is phycoerythrin; sexual reproduction is oogamous; male gametes known as spermatia, are non-flagel­lated; reserve food is Florideam starch. There is three main Algae classification: Chlorophyceae – These are called green algae, due to the presence of pigments chlorophyll a and b. 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. E Fritsch (1938, 1948) in his book The Structure and Reproduction of the Algae. 1. 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. They are found in fresh water or saline water; unicellular, multicellular or colonial; cells flagellated or non-flagellated; reproduction is asexual or sexual; presence of chlorophyll, carotin and xanthophyll like higher plants; reserve food is starch. Chrysophyceae 4. Classification of Fritsch was based on the following criteria Pigmentation Types of flagella Assimilatory products Thallus structure Method of reproduction Fritsch divided algae into the following 11 classes 1.Chlorophyceae 2. He considered that as a group algae deserve the rank of division. Male gametes are similar to zoospore but smaller in size. Full text Full text is available as a scanned copy of the original print version. Batrachospermun, Polysiphonia, etc. These topics are not covered in … Chlamydomonas, Volvox, Oedogonium, Spirogyra, Vaucheria, Chara, etc. In the five kingdom classification, the word alga refers to organisms in any three kingdoms: in Monera, blue green algae (Cyanobacteria); in In 1955 C. M. Smith has classified algae into seven divisions, each of which contains one or more classes. Ø It consists of two halves which are radially or bilatorally symmetrical . He treated algae giving rank of division and divided it into 11 classes. Chlorophyta, Rhodophyta etc.) Examples are Chlamydomonas, Spirogyra, and Chara; Phaeophyceae – Also called as brown algae, they are predominantly marine. Myxophyceae or blue-green algae, e.g. According to Fritsch (1935), algae include all halophytic organisms that fail to reach the level of differentiation characteristic of archegoniate plants. your own Pins on Pinterest B. Flagellar arrangement. 3. Fritsch (1935, 1945) in his book “The Structure and Reproduction of the Algae” proposed a system of classification of algae. 4.  One of the best known algal classification was proposed by Fritsch who divided them into 11 classes (1945). 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 … Xanthophyceae 3. Sep 7, 2014 - This Pin was discovered by Biology 4u. Classification: F.E. 14. Ø Pyrenoid like bodies are present, independent of chromatophores, Ø Motile cells are dorsiventral with anteriorly inserted unequal flagella. Algae Classification. Chiefly marine; plant body large and complicated by the presence of pigment like fucoxanthin and phycophene; both sexual and asexual reproduction take place; sexual reproduction is isogamous and oogamous carbohydrate and oil are reserve food. Diatom. 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. Chlorophyceae (Green algae) General characterstics of Chlorophyceae. His classification of algae is mainly based upon characters of pigments, flagella and reserve food material. Fritsch (1944-45) categorized algae into eleven groups in his book “Structure and Reproduction of Algae” that are based on the given characteristics: A. Pigmentation. x. Rhodophyceae or red algae e.g. CLASSIFICATION OF ALGAE. In this article we will discuss about the Fritsch’s and Smith’s classification of algae. Fritsch classified algae into 11 classes on the basis of the type of pigments, mode of reproduction and nature of reserve food material. Oscillatonia, Nostoc, etc. ü Cryptomonadales e.g., Cryptomonas, Rhodomonas, Cyanomonas. He divided it into 11 classes. He divided it into 11 classes based on pigments,reserve food materials and flagellar types. Methods: A systematic literature search was conducted in PubMed and Embase for studies comparing SLICC'12 … ii. So there is no word like phyta (e.g. They are Chlorophyceae, Xanthophyceae, Chrysophyceae, Bacillariophyceae, Cryptophyceae, Dinophyceae, Chloromonodineae, Euglinineae, Phaeophyceae, Rhodophyceae and Myxophyceae (Cyanophyceae). Most live in fresh water, but some are found in marine and soil habitats. Chrysophyceae 4. Fctocarpus, Laminaria, Dictyota, Fucus, etc. Fritsch (1935, 1945) in his book “The Structure and Reproduction of the Algae” proposed a system of classification of algae. Ø Sexual reproduction rare or isogamous type, ü Desmonadales e.g., Desmocapsa, Pleromonas, Desmomastix, ü Thecatales e.g., Exuviaella, Porocentrum, ü Dinophyceales e.g., Dinophysis, Ornithocercus, Phalacroma, ü Dinoflagellata e.g., Amhidinium, Blastidinium, Ceratium, Heterocapsa, ü Dinotrichales e.g., Dinothria, Dinoclonium, Ø Bright green tint due to excess xanthophylls. Plant Science Life Science Electron Microscope Images Plants Learning Study Blue Nails Studio Investigations. C. Reserve food. Chlorophyceae (green algae) Phaeophyceae (brown algae) Rhodophyceae (red algae). 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