Algae - Algae - Photosynthesis and light-absorbing pigments: Photosynthesis is the process by which light energy is converted to chemical energy whereby carbon dioxide and water are converted into organic molecules. The cell wall in Chlorophyceae is made up of cellulose. This classification was carried out in 1986 and placed spirochetes, spiral and curved, aerobic bacteria and facultatively aerobic rods, obligate anaerobic bacteria, aerobic and anaerobic cocci, sulfate and sulfur-reducing, rickettsias, clamydias, and mycoplasmas in this group. What is a mushroom shaped gland? • Too much growth of green algae can indicate pollution from: excess nutrients • This is a condition know as: eutrophication • It often occurs where: rivers meet the coast • The excess algae can cause "dead zones" because when the algae dies decaying bacteria use: oxygen Some acellular organisms like viruses and viroids as well as the lichens are not included in the five kingdom system of classification. Hence came the five kingdom classification. Pigmentation and Photosynthetic Apparatus: Type # 6. The algae belong to the subphylum Thallophyta of the kingdom Protista in modern classification of organisms. These are pantonematic and covered by minute hairs. The type, number and position of flagella are important basis for separation of different classes of algae. Fritsch’s Classification: 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. Sub Phylum B: Plasmodroma. The nature of reserve food can be a criterion for distinction of different groups of algae. Cryophilic algae occur in snow and ice (see red snow); thermophilic algae live in hot springs; edaphic algae live on or in soil; epizoic algae grow on animals, such as turtles and sloths; epiphytic algae grow on fungi, land plants, or other algae; corticolous algae grow on the bark of trees; epilithic algae live on rocks; endolithic algae live in porous rocks or coral; and chasmolithic algae grow in rock fissures. Types of Classification System These includes artificial system, natural system and phylogenetic system of … Class: Pucciniomycetes. In Cyanophyceae the thylakoids are free in cytoplasm as chloroplasts are not found and pyrenoids are also absent. Xanthophyceae 3. 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 The presence or absence of pigments which impart colour to the algae forms the main basis of classification of algae. DNA fibrils are free in nucleoplasm and are not associated with histones. Some species shows Alternation of generations in their life cycle. What is the significance of the Hardy-Weinberg equilibrium? Classification of Kingdom Plantae. If you have snorkeled or gone scuba diving off the California cost you may have come across bull kelp, a type of brown algae that belong to the Protist kingdom. He treated algae giving rank of division and divided it into 11 classes. The pigments in algae can be chlorophylls, carotenoids and biloproteins. Sub Phylum A: Plasmodroma. Xanthophyceae or yellow—green algae e.g. In Cyanophyceae and Rhodophyceae flagella are completely absent in vegetative and reproductive structures. Chlorophyll a is present in all classes of algae. (according to the latest classification system) P. graminis is an obligate parasite, and heteroecious rust. The first group is macro algae, which includes green, brown and red algae. tonematic flagella, (C). Chrysophyceae 4. Algae are the simplest multicellular plants. Classification of Algae: Class. Classification of Algae. Phylum: Basidiomycota. Before sharing your knowledge on this site, please read the following pages: 1. Nature of Reserve Food: The primary product of photosynthesis i.e., starch is same in all groups of … There is three main Algae classification: Chlorophyceae – These are called green algae, due to the presence of pigments chlorophyll a and b. Class 1: Mastigophora. Hierarchies of Life Protista due to the fact that the kingdom is so diverse, and there was a mixture of results for specific species. There are four distinct groups within the algae − Group 1 Prokaryotic algae include two divisions: Cyanobacteria and Prochlorophyta.. − Group 2 Eukaryotic algae with chloroplasts surrounded only by the two membranes of the chloroplast envelope and includes mainly two … Type of Life Cycle and Reproduction: The best answers are voted up and rise to the top. Cell division by mitosis and meiosis is not found. The chloroplasts shows various shape ie. 11. As the group implies, microorganisms are Photosynthetic organisms (plants, algae, cyanobacteria) are considered photoautotrophs- utilizes light as energy source and CO2 as carbon source Ability to oxidize H2O and release molecular oxygen, a lithotrophic activity Organism whose activities are phototrophic, autotrophic, and lithotrophic, and the classic "photosynthetic equation) In fact, even Aristotle classified living organisms on the basis whether they lived on land, water or air. Nothing could be further from the truth. State what criteria are used in viral classification. flagellum. This is a question and answer forum for students, teachers and general visitors for exchanging articles, answers and notes. Table of Contents hide. Root, Stem and Leaves. Algae are photosynthetic eukaryotic organisms. Algae possess the usual eukaryotic structures - Golgi apparatus, mitochondria, … Share Your Word File TOS4. Spiral shape in. In Phaeophyceae the reserve food material is laminarin or mannitol. Algae are usually green, but they can be found in a variety of different colours. In Rhodophyceae rhodophycean or floridean starch and in Cyanophyceae myxophycean starches are the reserve foods. The inner layer of cell wall in algae is generally made up of cellulose, which is insoluble polysaccharide and the outer layer is made of pectic substances. The primary product of photosynthesis i.e., starch is same in all groups of algae but due to accumulation of food over long period the nature of insoluble reserve food may be different. Nature of Reserve Food. Chlorophyceae (Green algae) General characterstics of Chlorophyceae. These are eukaryotic organisms, autotrophic in […] Cyanophyceae (Blue Algae) Phycocyanin. Chlamydomonas, Volvox, Oedogonium, Spirogyra, Vaucheria, Chara, etc. Class 2: Sarcodina. The cell is complex in its makeup and its function. Criterion for classification: Proposed by R.H Whittaker (1969) a) Complexity of cell structure: prokaryotic and Eukaryotic . Sexual: isogamous or oogamous type gametic fusion. Role of ADH, Angiotensin and Aldosterone in Osmoregulation, Rotavirus-Classification, Structure composition and Properties, Replication, Mode of Transmission, Pathogenesis, Clinical symptoms, laboratory diagnosis, Treatment, Prevention and Control, Copyright © 2020 | WordPress Theme by MH Themes. What is its function? It is the largest class of algae; They are commonly known as green Algae. The chromatophores of different classes of algae differ in number of thylakoids per granum. Share Your PPT File. Classification of Plant Groups- Cryptogamae and Phanerogamae In 1883, A.W. Chlorophyll e is confined to Tribonema of Xanthophyceae. Share Your PDF File Common examples are Volvox, Fucus, Spirogyra, Chara, Polysiphonia, Ulothrix, etc. They are commonly found in aquatic environments including freshwater, marine and brackish water. Colour. In Prasinophyceae, prasionate type flagella are found. On the basis of nuclear organization algae can be prokaryotic or eukaryotic. In Chlorophyceae the reproduction can be isogamous, anisogamous and oogamous, the life cycle can be simple or complex. In Cyanophyceae or blue green algae the cell wall is more like bacteria and is made up of mucopeptides. Yeast: Origin, Reproduction, Life Cycle and Growth Requirements | Industrial Microbiology, How is Bread Made Step by Step? Genus: Puccinia. protozoa, algae, and fungi •1937Prokaryoteintroduced for cells "without a nucleus" •1961Prokaryote= cells in which nucleoplasm is not surrounded by a nuclear membrane • 1959 Kingdom Fungi • 1968 Kingdom Prokaryotae proposed • 1978 Two types of prokaryotic cells found Timeline They include bacteria, fungi, algae, and protozoa; microscopic plants, and animals. Latin ‘alga’ means seaweed. Membrane bound cell organelle like chloroplast, mitochondria and ER are absent. Levels of Classification of Plants: There are three levels of classification among plants. Taxonomic classification of algae is based upon the same rules that are used for the classification of land plants. The contents of this documents are Dichotomous Key to Freshwater Algae, Groups of Cyanobacteria & Algae, Dinoflagellates, Euglenoids, Brown, Golden brown, and Yellow brown Algae … Blue. The use of algae in integrated aquaculture has also been recently reviewed by Turan (2009). 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