Classification of algae. R.H. Whittaker Classification of Plant Kingdom. They are used in the following ways. Many species of Ephedra produce ephedrine, which can be used in the treatment of asthma and bronchitis. (c) Commercial importance: It is used for the production of Agar which is obtained from Gelidium and Gracilaria. Name three groups of plants that bear archegonia. (a) Food source: Many species of marine algae such as Porphyra, Sargassum, and Laminaria are edible and used as food. Login. . 232, Block C-3, Janakpuri, New Delhi, Storage product. If answered seriously i will make brainlest. Best answer. Nature of Reserve Food 5. CLASSIFICATION OF ALGAE On the basis of photosynthetic pigments algae classified into three classes. This division has all unicellular flagellates. The plant cells would die because they wouldn't extract enough energy from the glucose produced in photosynthesis. It is the most diverse Algal group is Green Algae. Cell wall composition 6. …, does all C4 plants possess dimorphic chloroplast​, State four international organizations of which Ghana is a member, Hey promise01010107 you here, i wanna chat ;)​. This stage bears the sex organs. Flagella characteristics 4. Archegonium is the female sex organ that produces the female gamete or egg. Classification of alage. Pigmentation and Photosynthetic Apparatus 4. (c) Food source: The seeds of Pinus are edible and used as food. ....also do answer my first question..​, Which represents the empirical formula for X4Y8?O XY2O XzY4O X4Y8XY​, chlorophyll a, chlorophyll c, fuxoxanthin. answered Aug 1, 2017 by Vikash Kumar (256k points) selected Jan 3, 2019 by Vikash Kumar . Fucoxanthin imparts brown colour. Join now. . These characteristics are: Shape and size of cells; Features of the cell wall; Morphology, type, number of flagella; This classification are based on three main characters: A. Economic importance of algae. Join Now. Fucoxanthin imparts the brown colour. Nuclear organization Economic importance of algae - Algae have diverse economic uses. Cyanophyceae (Blue Algae) Phycocyanin. Chlorophyceae - In this type of algae Chlorophyll a and b are present and impart green colour pigment. o cell wall composition and structure. Cell wall composition. The study of algae is called Phycology or algology. Algae Classification: Phylum. “Algae” is a sort of catchall term, encompassing a very diverse group of organisms with correspondingly diverse origins. The following points highlight the six main criterions on which modern concepts of classification of algae is based. They place the fungi including the slime molds in the kingdom mycetae of the super kingdom Eukaryota which, in addition, includes four other kingdoms. It imparts red colour. These divisions are based on the following factors: (a) Major photosynthetic pigments present (b) Form of stored food The sperm and eggs are produced mitotically in the antheridia and archegonia, respectively. When and where does reduction division take place in the life cycle of a liverwort, a moss, a fern, a gymnosperm and an angiosperm? The division of mycota, or fungi and moulds, includes the true slime moulds (Myxomycetes), the lower fungi (Phycomycetes), and the higher fungi (Eumycetes). What is the basis of classification of algae? Common name – Green algae It is considered a Paraphyletic Group. Sperm are carried to the archegonia in water droplets. (c) Cell wall composition. chlorophyll a and chlorophyll d, phycoerythrin, The presence or absence of pigments is the main basis of classification of algae:-. Interesting question . Early morphological research using electron microscopes demonstrated differences in features, such as the flagellar apparatus, cell division process, and organelle structure and function… Cells within the sporangium of the sporophyte undergo meiosis to produce male and female spores, respectively. They are commonly found in aquatic environments including freshwater, marine and brackish water. Algae have diverse economic uses. Chlorophyceae: They are usually green in colour due to the presence of pigments chlorophyll a and b. Common Name. Most diatoms exist on an individual basis, though some are part of to make colonies. The basis of classification of algae are its nature i.e cellular characteristic and form and size (a) Food source: Many species of marine algae such as Porphyra, Sargassum, and Laminaria are edible. https://www.zigya.com/share/QklFTjExMDk1MDQ0. This classification was believed to be modern. Ask your question. Download the PDF Question Papers Free for off line practice and view the Solutions online. Ltd. Download books and chapters from book store. Green algae – Chlorophyceae. Log in. CLASSIFICATION OF ALGAE. (iv) Diplontic –It is the kind of life cycle in which the diploid sporophyte is the dominant, photosynthetic, independent phase of the plant. These are also called as ‘blue-green algae’. Economic importance of gymnosperms – Gymnosperms are of great economic value. (ii) Antheridium – It is the male sex organ present in bryophytes and pteridophytes. Log in. The plant cells would function normally since they would make all the sugars they need during photosynthesis. Criteria # 1. Chlorophyceae → green algae or blue-green algae due to the presence of pigments chlorophyll a and b. Phaeophyceae → living thing organisms of the dominion Protista, characterised by a silica shell of typically intricate and delightful sculpturing. Phaeophyceae: Chlorophyll a and c and fucoxanthin are present. The Gametophytic stage consists of two stages(i). Classification of algae 1. Leafy stage – this is the second stage which develops from the secondary protonema as a lateral bud.They consist of upright slender axes which bears spirally arranged leaves. Some of the universities also offer BSc Honours. This type of reproduction is commonly observed in Spirogyra. In view of the coronavirus pandemic, we are making LIVE CLASSES and VIDEO CLASSES completely FREE to prevent interruption in studies. Answered Basis of classification of algae 2  Morphology of motile reproductive cells. (d) Source of resins: Conifers such as Pinus australis is an excellent producers of resins. The basic, or most general, classification of algae is in kingdom protista. 2. 1. what are vectors? 1. Characteristic Features. Alexopolous and Mims proposed fungal classification in 1979. And all the prokaryotes are grouped into it. (a) Construction purposes: Many conifers such as pine, cedar, etc., are sources of the soft wood used in construction and packing. Colour. They are classified on the basis of following characteristics: Primary photosynthetic pigments. Solution for What is the basis of classification of algae? Join kro sabhiI'd-934 723 6482pass-1234join me,join​ me​, HELP!!! Join now. Method of propagation 5. Presence of pigments which imparts traditional color on algae is the main basis for the classification of algae. Login. It enclose the sperm mother cells that give  rise to the male gametes. Pigmentation and Photosynthetic apparatus 2. Chlorophyta 1. Answer The presence or absence of pigments is the main basis of classification of algae. Body structure. It is present in the life cycles of mosses (bryophytes), pteridophytes, and gymnosperms.Life cycle of a moss.Gametophytic stage is the predominant stage of the moss lifecycle. Because of the range of diversity amongst algae, a scientist by the name of Fritsch attempted to classify algae into eleven classes in 1935. There are different types of algal classification What is the basis of classification of algae? Protenema stage – this is the first stage which develops directly from a spore.(ii). © Algae are classified on the basis of type of the pigments present in them. (d) Number of flagella and position of insertion. (b) Medicinal uses: An anticancer drug Taxol is obtained from Taxus a gymnosperm. The presence or absence of pigments which impart colour to the algae forms the main basis of classification of algae. Hit Return to see all results Picture. Of course, it is thought that all plants developed from cyanobacteria (aka blue green algae). Algae are photosynthetic eukaryotic organisms. Classified algae into 7 divisions and divisions into different classes on the basis of :-  Physiology of vegetative cells. Although algae are so diverse in nature and form, there are still a few characteristics on the basis of which they can be classified. This is the most modern classification scheme of algae. 1. (b) Food supplements: Chlorella and Spirulina are rich in proteins and are used as food supplements. What is the basis of classification of algae? Phaeophyceae - This type of algae Chlorophyll a and c along with fucoxanthin are present. Division Class Example 1. In prokaryotic e.g., Cyanophyceae—nucleus is not organized as nuclear membrane is absent. BSc 1st Year Botany Classification of Algae Sample Model Practice Question Answer Papers. …. (d) Production of hydrocolloids: Certain brown (align) and red algae (carrageen) are used for the production of hydrocolloids. BSc 1st Year Botany Classification of Algae Sample Model Practice Question Answer Papers: BSc is a three-year program in most of the universities. Algae are classified on the following factors:(a) Major photosynthetic pigments present. Some of the motile and non-motile algae may form a colony known as Coenonbium. Fucoxanthin imparts brown colour to the algae . What type of sol What is the basis of classification of algae? These are -phyta for division, -phyceae for class, -phycideae for subclass, -ales for order, -inales for suborder, -aceae for family, -oidease for subfamily, a Greek-based name for genus, and a Latin-based name for species. (b) Form of stored food. Algae are classified into three main classes – Chlorophyceae, Phaeophyceae, and Rhodophyceae. Classification of Algae: Class. 200 species are included in this category. 14. 1. Write a note on economic importance of algae and gymnosperms. (vi) Isogamy – It is a type of sexual reproduction involving the fusion of morphologically-similar gametes. Examples of algae include diatoms, kelp, and spirogyra. Liverwort: In liverworts, the reduction division takes place in the capsule during the sexual reproduction.Moss: In mosses the reduction division takes place in the capsule during the sexual reproduction.Fern: Reduction division takes place in the sporangia, thereby producing many spores during the sexual reproduction.Gymnosperm: Reduction division takes place in the microsporangia present and in the megasporangia during sexual reproduction.Angiosperm: In angiosperms, reduction division takes place in the anthers of the stamen (producing haploid pollen grains or male gametes) and in the ovary of the pistil (producing eggs or female gametes ) during the sexual reproduction phase. Type and location of flagella. Algae are the aquatic eukaryotic organisms that have chlorophyll and carry out oxygen-producing photosynthesis. What is the basis of classification of algae? The plant cells would use ADP for fuel instead of ATP since there would be an abundance of ADP. Which of the following would most likely happen if the ATP synthesis in the mitochondria of a pla November 22, 2019 Allenraj Kamakshi. On the basis of nuclear organization algae can be prokaryotic or eukaryotic. On the basis of the variation of habitat, its 7000 species are identified by Biologist. Chlorophyta: Green Algae. nt's cells suddenly operated poorly? - Chlorophyceae: Chlorophyll a and b are present in them and impart green colour. Nuclear Organization 2. Solution Show Solution. The criterions are: 1. This means that the gametes are of the same size, but perform different functions. plant kingdom; Share It On Facebook Twitter Email. Cryptophyta. What is the basis of classification of algae? And are also known as ‘brown algae’. They are divided into three main classes – Chlorophyceae, Phaeophyceae, and Rhodophyceae. The plant cells would stop photosynthesis so there is no build-up of excess glucose in the cytoplasm. 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