(2). AlgaeAn Overview 2. Besides being an extremely nutritious food, they are increasingly used for industrial purposes. Algae 1. Now customize the name of a clipboard to store your clips. The key to algae’s potential as a renewable fuel source involves the increase of algal biomass productivity per acre. Prokaryotic and Eukaryotic Algal cell structure, No public clipboards found for this slide. Present knowledge argues overwhelmingly for a cyanobacterial origin of all algal plastids, with stable incorporation of many of the endosymbiont's genes in the host genome (Bhattacharya and Medlin, 1995). Introduction to the algae 1. Majority of the workers support their origin from the algal ancestors. Learn more: Lecture Note in Algae General Characteristics. Now customize the name of a clipboard to store your clips. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. See our User Agreement and Privacy Policy. Algae also provide the bulk of the Earth's oxygen supply through photosynthesis. Also, algae fuels are an alternative to commonly known biofuel sources, such as corn and sugarcane. No public clipboards found for this slide. COURSE CODE: BOT-306 Algae - Algae - Ecological and commercial importance: Algae form organic food molecules from carbon dioxide and water through the process of photosynthesis, in which they capture energy from sunlight. NAME: NADIA IMDAD history, awareness of the algae may derive from basically bad situations, such as news clips about poisonous red tides and shellfish poisoning, about masses of green seaweeds Characteristics• Range in size from microscopic to single celled organisms to large seaweed• Autotrophic• Form the reproductive structures – gametangia or gamete chambers• Aquatic and have flagella at some point in life• Often contain pyrenoids, organelles that synthesis and store starch biotechnology 1st year Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. In addition, algae may occur in moist soil or on the surface of moist rocks and wood. Marine algae have been known and utilized from the ancient era. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. Unicellular algae occur most frequently in water, especially in plankton.Phytoplankton is the population of free‐floating microorganisms composed primarily of unicellular algae. Algae 1. Algae fuel, algal biofuel, or algal oil is an alternative to liquid fossil fuels that uses algae as its source of energy-rich oils. Skilled in Microbiology, Plant pathology, Food Science and Molecular Biology. Use of algae, especially the cyanobacteria (blue-green algae), for antibiotics and pharmacologically active compounds has received ever increasing interest. You can change your ad preferences anytime. • They are major contributors to global bio- diversity, with estimated numbers of species ranging from 36,000 to more than 10 million. • The algae are a heterogeneous group of organisms. Algae, particularly the seaweeds, are used as fertilizers, resulting in less nitrogen and phosphorous runoff than the one from the use of livestock manure. Algae live with fungi in lichens.. Looks like you’ve clipped this slide to already. See our Privacy Policy and User Agreement for details. He is reputed to have observed strands of … Marine algae, commonly called seaweed, provides food and shelter for marine life. The Culture Collection of Algae and Protozoa (CCAP) is the largest collection of marine and freshwater algae, protists and seaweed in Europe. If you continue browsing the site, you agree to the use of cookies on this website. It is a belief in common that Bryophytes have originated from algae (except few sectarian). The field is concerned with the structure, function, and classification of such organisms and with ways of both exploiting and controlling their activities. Clipping is a handy way to collect important slides you want to go back to later. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Asexual reproduction: By a variety of motile or non-motile spores. However, these are some of the more prominent types: Red Algae. Pharmaceutical industry is growing at a CAGR of around 8% while the global pharmaceutical market is forecasted to reach US$ 1043.4 billion in 2012. • Contain pigments • chlorophylls a, and many often have another chlorophyll, like b, c, or d and accessory red, blue and brown photosynthetic pigments are the important vegetative reproduction methods in algae. Algae as a Source of Pharmaceuticals. • Algae are chlorophyll bearing thallophytes in which the sex organs are wither unicellular or multicellular and not presented by sterile envolope • Algae – derived – latin word – alga : washed away plants on sea shore or sea weeds • Can able to produce many celled sex organs • No sterile cell in sex organ except chara. What is algae? Many scientists, however, attribute the similarity to an endosymbiotic origin of the red algal chloroplast from a blue-green algal symbiont. If you continue browsing the site, you agree to the use of cookies on this website. There are many types of algae. Characteristics Of Algae • Vary in size from nanoplankton (< 2 µm cyanobacteria ) to Giant kelps (> 70 m long). The word algae generally refer to a wide array of plants that share the name though not closely related. This hypothesis was supported by Lignier (1903), Bower (1908), Fritsch (1945) and Smith (1955) etc. • Materia Medica was used for compilation of all details about Natural products. Algae are a group of autotrophic and eukaryotic organisms. Although the exact origin of the word algae is unknown, the singular form, alga, is a Latin word that refers to seaweed.Some etymologists have theorized that the term algae may have its roots in the Latin language from the word algēre, which refers to the cold. It is the source of chemical compounds mainly useful as a food for their richness in protein, fatty acids, minerals and vitamins. Algae - Algae - Reproduction and life histories: Algae regenerate by sexual reproduction, involving male and female gametes (sex cells), by asexual reproduction, or by both ways. Upcoming SlideShare. Seaweeds are macrophytic algae, a primitive type of plants lacking true roots, stems and leaves. Types of Algae. According to one school of thought they are evolved from the green Thallophyta the algae; and according to the other school they have been descended from the pteridophytes. See our User Agreement and Privacy Policy. SUBMITTED TO: M,AM RABIA LIAQAT Predators - Algae is eaten by Algae Eating Fish, including Black Sailfin Mollies, Otocinclus, Plecostomus, Siamese Algae Eater, Crossocheilus siamensis etc. The basis before this is, Chlorophyceae is the only algae with identical chlorophyllus and xanthophyllus relatedly present in bryophytes. 1. But there is also a myriad of human uses for algae. Looks like you’ve clipped this slide to already. If you continue browsing the site, you agree to the use of cookies on this website. We use algae for food, medicine, and even to combat climate change. Possess a cell wall. The contents of this documents are Dichotomous Key to Freshwater Algae, Groups of Cyanobacteria & Algae, Dinoflagellates, Euglenoids, Brown, Golden brown, and Yellow brown Algae … Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Early history of microbiology. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. U O G. Algae - Algae - Ecological and commercial importance: Algae form organic food molecules from carbon dioxide and water through the process of photosynthesis, in which they capture energy from sunlight. ALGAE 2. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Distribution and origin Algae support highly productive and varied ecosystems. If you continue browsing the site, you agree to the use of cookies on this website. Asexual reproduction is the production of progeny without the union of cells or nuclear material. General characteristics of algae, Classification of algae based on habitat, Thallus diversity in algae, Chloroplast shape variations in algae, Pigmentation in algae, Reproduction in algae, Life cycle in algae. There are about 900 species of green seaweed, 4000 red species and 1500 brown species found in nature. What Is Algae? You can change your ad preferences anytime. Objectives of Plant pathology 1. Algae are free-living, although some can form a symbiotic relationship with other organisms. Algae - Algae - Classification of algae: 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. Algae may even be used to produce fuel. Clipping is a handy way to collect important slides you want to go back to later. These tough organisms can survive throughout the world on soils, beneath polar ice and in snow, but most are found in the waters that cover the Earth’s surface such as wetlands, rivers and oceans. Chlorophyceae is the universal one that is proposed and expected widely as the origin of bryophytes. There is no fossil evidence of origin of Bryophytes from algae but Bryophytes resemble with algae in characters like-amphibious nature, presence of flagellated antherozoids and necessity of water for fertilization. Concepts of Botany Algae (PDF 21P) This note contains explanation of algae, structure of alage and its classification. Vegetative reproduction: Cell division, fission, fragmentation, Hormogonia, formation of adventitious branches, tubers, buddings etc. Also called Rhodophyta, it is a distinctive species found in marine as well as freshwater ecosystems. COURSE TITLE: PLANT PHYSIOLOGY Alga definition is - a plant or plantlike organism of any of several phyla, divisions, or classes of chiefly aquatic usually chlorophyll-containing nonvascular organisms of polyphyletic origin that usually include the green, yellow-green, brown, and red algae in the eukaryotes and especially formerly the cyanobacteria in the prokaryotes. CLASSIFICATION OF ALGAE BASED ON SEVEN MAJOR DIVISIONS 1) Nature and properties of pigments 2) Chemistry of reserve food products 3) Morphology of flagella 4) Morphology of cells and thalli 5) Life history reproductive structures and methods of reproduction 6) Food-storage substance 7) Cell wall composition 23. Historians are unsure who made the first observations of microorganisms, but the microscope was available during the mid‐1600s, and an English scientist named Robert Hooke made key observations. Some researchers say algae could be 10 or even 100 times more productive than traditional bioenergy crops. DEPARTMENT: BOTANY See our Privacy Policy and User Agreement for details. Most seaweeds belong to one of three divisions - the Chlorophyta (green algae), the Phaeophyta (brown algae) and the Rhodophyta (red algae). Microbiology, the scientific study of microorganisms, a diverse group of generally minute simple life-forms, including bacteria, algae, and viruses. Reproduction in algae: Ø Algae reproduce by three methods: (1). Find out some really interesting uses of algae, by going through this article. no.- 161103004 m.sc. Other scientists suggest that the red algae evolved from the Cryptophyceae, with the loss of flagella, or from fungi by obtaining a chloroplast. algae- structure and classification presented by:- rajpal choudhary reg. This slide helps to know about the general characteristics, habit and habitats, range of thallus structure of algae. Introduction to the Algae 20141101159 Ram Hari Dahal 2. Plankton.Phytoplankton is the population of free‐floating microorganisms composed primarily of unicellular algae occur most frequently in water, in. And Molecular Biology basis before this is, chlorophyceae is the source of chemical compounds mainly useful as food. 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