Nature of Reserve Food 5. Sperm are carried to the archegonia in water droplets. This classification are based on three main characters: A. - Chlorophyceae: Chlorophyll a and b are present in them and impart green colour. The criterions are: 1. Briefly describe the life cycle of any one of them. You can specify conditions of storing and accessing cookies in your browser, If a cell that contains 70% water and 30% sugar is placed in a solution that is 95% water and 5% sugar, what will happen to the cell? Nature of Cell Wall Components 3. The plant cells would use ADP for fuel instead of ATP since there would be an abundance of ADP. (i) Protonema – It is the first stage in the life cycle of a moss, developing directly from the spore. Algae are classified on the following factors: (a) Major photosynthetic pigments present. Flagella characteristics 4. They are either motile or non-motile. Chlorophyta: Green Algae. Picture. DIATOMS. The main phylogenetic groups of algae are. 200 species are included in this category. 1. Download the PDF Question Papers Free for off line practice and view the Solutions online. Cyanophyceae (Blue Algae) Phycocyanin. Classified algae into 7 divisions and divisions into different classes on the basis of :-  Physiology of vegetative cells. Explain briefly the following terms with suitable examples:(i) protonema (ii) antheridium (iii) archegonium (iv) diplontic (v) sporophyll (vi) isogamy. In bryophytes and pteridophytes, it generally contains the female gamete called the egg. Chlorophyceae: Chlorophyll a and b are present in them and impart the green colour. Fucoxanthin imparts brown colour to the algae . Join kro sabhiI'd-934 723 6482pass-1234join me,join​ me​, HELP!!! Although algae are so diverse in nature and form, there are still a few characteristics on the basis of which they can be classified. Fucoxanthin imparts the brown colour. Pigmentation and Photosynthetic Apparatus 4. They place the fungi including the slime molds in the kingdom mycetae of the super kingdom Eukaryota which, in addition, includes four other kingdoms. (d) Number of flagella and position of insertion. 2020 Zigya Technology Labs Pvt. Flagellation 6. (v) Sporophyll – The leaf like appendages which bear the sporangia is called sporophyll. Chlorophyceae - In this type of algae Chlorophyll a and b are present and impart green colour pigment. Chlorophyceae are also called 'blue-green algae". Solution I: The presence or absence of pigments is the main basis of classification of algae. Economic importance of algae - Algae have diverse economic uses. This site is using cookies under cookie policy. o the presence or absence of flagella (as well as the number and biology. Fucoxanthin imparts brown colour. These can bear both the microspores and megaspores. Chlorophyceae are also called as ‘blue-green algae’. Storage product. Some of the universities also offer BSc Honours. Basis of classification of algae Get the answers you need, now! 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. What is the basis of classification of algae? Type and location of flagella. “Algae” is a sort of catchall term, encompassing a very diverse group of organisms with correspondingly diverse origins. The plant cells would stop photosynthesis so there is no build-up of excess glucose in the cytoplasm. Classification of algae 1. o cell wall composition and structure. Answer The presence or absence of pigments is the main basis of classification of algae. (b) Medicinal uses: An anticancer drug Taxol is obtained from Taxus a gymnosperm. Phaeophyceae - This type of algae Chlorophyll a and c along with fucoxanthin are present. What type of sol They are divided into three main classes – Chlorophyceae, Phaeophyceae, and Rhodophyceae. 1. The Gametophytic stage consists of two stages(i). Phaeophyceae: Chlorophyll a and c and fucoxanthin are present. 14. This type of reproduction is commonly observed in Spirogyra. …. 1. what are vectors? 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. Chlorophyceae are also called ‘blue-green algae’. ....also do answer my first question..​, Which represents the empirical formula for X4Y8?O XY2O XzY4O X4Y8XY​, chlorophyll a, chlorophyll c, fuxoxanthin. There are different types of algal classification The major algal groups are distinguished on the basis of : 1. Algae are classified into three main classes – Chlorophyceae, Phaeophyceae, and Rhodophyceae.  Morphology of motile reproductive cells. 100 pts reward. Cryptophyta. . They perform half of the total carbon dioxide-fixation on earth by photosynthesis, acting as the primary producers in aquatic habitats. (b) Food supplements: Chlorella and Spirulina are rich in proteins and are used as food supplements. Algae are classified based on the colour of algae that is based on the presence or absence of the certain type of pigment that gives algae its colour. Pigments Present. Early morphological research using electron microscopes demonstrated differences in features, such as the flagellar apparatus, cell division process, and organelle structure and function… Algae are classified into three main classes – Chlorophyceae, Phaeophyceae, and Rhodophyceae. 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. This means that the gametes are of the same size, but perform different functions.  Photosynthetic pigments. Join Now. The presence or absence of pigments which impart colour to the algae forms the main basis of classification of algae. What is the basis of classification of algae? Products stored 3. They are commonly found in aquatic environments including freshwater, marine and brackish water. Body structure.  Reserve foods. Chlorophyceae → green algae or blue-green algae due to the presence of pigments chlorophyll a and b. Phaeophyceae → Alexopolous and Mims proposed fungal classification in 1979. 3.Rhodophyceae - These algae has chlorophyll a and d and phycoerythrin are present. Algae are classified into three main classes – Chlorophyceae, Phaeophyceae, and Rhodophyceae. Pigmentation and Photosynthetic apparatus 2. • Chlorophyceae: Chlorophyll a and b are present in them and impart green colour. (c) Food source: The seeds of Pinus are edible and used as food. answered Aug 1, 2017 by Vikash Kumar (256k points) selected Jan 3, 2019 by Vikash Kumar . Interesting question . Algae possess the usual eukaryotic structures - Golgi apparatus, mitochondria, … © 1 Answer +2 votes . Common Name. These characteristics are: Shape and size of cells; Features of the cell wall; Morphology, type, number of flagella; Phaeophyceae: Chlorophyll a and c and fuxoxanthin are present. What is the basis of classification of algae? 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. Resins are used in various industries such as varnishes, plasters and enamel paint because they are resistant to decay. (asking for a friend) how do I get my friend un-addicted from porn? Method of propagation 5. Colour. Chlorella and Spirulinaare rich in proteins. These divisions are based on the following factors: (a) Major photosynthetic pigments present (b) Form of stored food It consists of creeping, green, branched, and often filamentous structures. In view of the coronavirus pandemic, we are making LIVE CLASSES and VIDEO CLASSES completely FREE to prevent interruption in studies. (ii) Antheridium – It is the male sex organ present in bryophytes and pteridophytes. (c) Cell wall composition. He gave the five systems of classification. Name three groups of plants that bear archegonia. Cyanophyceae or blue green algae are prokaryotic in nature whereas all other classes of algae are eukaryotic. Classification of algae. 2. What is the basis of classification of algae? Algae are photosynthetic eukaryotic organisms. Green algae – Chlorophyceae. (e) Habitat. … Solution Show Solution. This division has all unicellular flagellates. Complexity of Cell: Cell is prokaryotic or eukaryotic, on the basis kingdom Monera is formed. The plant cells would function normally since they would make all the sugars they need during photosynthesis. They are classified on the basis of following characteristics: Primary photosynthetic pigments. Ask your question. The plant cells would die because they wouldn't extract enough energy from the glucose produced in photosynthesis. …, does all C4 plants possess dimorphic chloroplast​, State four international organizations of which Ghana is a member, Hey promise01010107 you here, i wanna chat ;)​. Type of Life Cycle and Reproduction. In prokaryotic e.g., Cyanophyceae—nucleus is not organized as nuclear membrane is absent. They are used in the following ways. living thing organisms of the dominion Protista, characterised by a silica shell of typically intricate and delightful sculpturing. Classification of Algae: Class. (vi) Isogamy – It is a type of sexual reproduction involving the fusion of morphologically-similar gametes. Algae Classification: Phylum. Archegonium is the female sex organ that produces the female gamete or egg. And are also known as ‘brown algae’. November 22, 2019 Allenraj Kamakshi. What is the basis of classification of algae? Some of the motile and non-motile algae may form a colony known as Coenonbium. On the basis of nuclear organization algae can be prokaryotic or eukaryotic. Criteria # 1. Answered Basis of classification of algae 2 Protenema stage – this is the first stage which develops directly from a spore.(ii). plant kingdom; Share It On Facebook Twitter Email. Rhizoids are the multicellular structure that attaches the mosses to the soil. Cell wall composition 6. . (b) Form of stored food. Most diatoms exist on an individual basis, though some are part of to make colonies. Best answer. Join now. The term algae mean Aquatic Plants but differ from the plants in lacking a well-organized vascular conducting system and in having very simple reproductive structures. These are also called as ‘blue-green algae’. (c) Cell wall composition. The sperm and eggs are produced mitotically in the antheridia and archegonia, respectively. Sign Up. (iii) Archegonium – It is the female sex organ present in bryophytes, pteridophytes, and gymnosperms. Blue. Cell wall composition. (a) Construction purposes: Many conifers such as pine, cedar, etc., are sources of the soft wood used in construction and packing. What is the basis of 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. Login. (a) Food source: Many species of marine algae such as Porphyra, Sargassum, and Laminaria are edible. The basic, or most general, classification of algae is in kingdom protista. Characteristic Features. Of course, it is thought that all plants developed from cyanobacteria (aka blue green algae). chlorophyll a and chlorophyll d, phycoerythrin, The presence or absence of pigments is the main basis of classification of algae:-. Log in. Solution for What is the basis of classification of algae? This stage bears the sex organs. The division of mycota, or fungi and moulds, includes the true slime moulds (Myxomycetes), the lower fungi (Phycomycetes), and the higher fungi (Eumycetes). If answered seriously i will make brainlest. Common name – Green algae Whereas the above two classifications were proposed basing on some physical and chemical characteristics of algae, there is a third classification as proposed by Robert Edward Lee based on the evolutionary features. Algae are classified on the following factors:(a) Major photosynthetic pigments present. answers needed. Presence of pigments which imparts traditional color on algae is the main basis for the classification of algae. Economic importance of gymnosperms – Gymnosperms are of great economic value. BSc 1st Year Botany Classification of Algae Sample Model Practice Question Answer Papers. nt's cells suddenly operated poorly? (c) Commercial importance: It is used for the production of Agar which is obtained from Gelidium and Gracilaria. R.H. Whittaker Classification of Plant Kingdom. Protists have some characteristics of animals, and some of plants. Login. Which of the following would most likely happen if the ATP synthesis in the mitochondria of a pla And are also called ‘red algae’. Join now. (a) Food source: Many species of marine algae such as Porphyra, Sargassum, and Laminaria are edible and used as food. (d) Number of flagella and position of insertion. The following points highlight the six main criterions on which modern concepts of classification of algae is based. Write a note on economic importance of algae and gymnosperms. Ans. It is considered a Paraphyletic Group. Many species of Ephedra produce ephedrine, which can be used in the treatment of asthma and bronchitis. Habitat – Freshwater, Marine and terrestrial. After fertilisation, the sporophyte generation develops in the archegonium and remains attached to the gametophyte and the cycle is completed. Hit Return to see all results The are three main groups of algae being: Green algae; Red algae; Brown algae. On the basis of the variation of habitat, its 7000 species are identified by Biologist. Nuclear Organization 2. The gametophytic phase is represented by the single to few-celled haploid gametophyte. Algae are the aquatic eukaryotic organisms that have chlorophyll and carry out oxygen-producing photosynthesis. (iv) Diplontic –It is the kind of life cycle in which the diploid sporophyte is the dominant, photosynthetic, independent phase of the plant. CLASSIFICATION OF ALGAE. This classification was believed to be modern. This is the most modern classification scheme of algae. https://www.zigya.com/share/QklFTjExMDk1MDQ0. Cells within the sporangium of the sporophyte undergo meiosis to produce male and female spores, respectively. Algae are classified on the basis of type of the pigments present in them. When and where does reduction division take place in the life cycle of a liverwort, a moss, a fern, a gymnosperm and an angiosperm? 1. Examples of algae include diatoms, kelp, and spirogyra. (d) Source of resins: Conifers such as Pinus australis is an excellent producers of resins. Because of the range of diversity amongst algae, a scientist by the name of Fritsch attempted to classify algae into eleven classes in 1935. What is the basis of classification of algae? Classification of alage. It enclose the sperm mother cells that give  rise to the male gametes. DNA fibrils are free in nucleoplasm and are not associated with histones. Economic importance of algae. It imparts red colour. Division Class Example 1. The committee on the International Code of Botanical Nomenclature has recommended certain suffixes for use in the classification of algae. These divisions are based on the following factors: (a) Major photosynthetic pigments present (b) Form of stored food (c) Cell wall composition (d) Number of flagella and position of insertion. Chlorophyceae: They are usually green in colour due to the presence of pigments chlorophyll a and b. (d) Production of hydrocolloids: Certain brown (align) and red algae (carrageen) are used for the production of hydrocolloids. The study of algae is called Phycology or algology. •The current systems of classification of algae are based on the following main criteria: o kinds of photosynthetic pigments, o type or chemical nature of photosynthetic energy storage products o photosynthetic membranes’ (thylakoids) organization and other features of the chloroplasts. (b) Form of stored food. The basis of classification of algae are its nature i.e cellular characteristic and form and size It is the most diverse Algal group is Green Algae. The male (antheridia) and female (archegonium ) sporangia are formed at the apex of the leafy shoots. The presence or absence of pigments is the main basis of classification of algae. And all the prokaryotes are grouped into it. 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 have diverse economic uses. 232, Block C-3, Janakpuri, New Delhi, Ltd. Download books and chapters from book store. Agar is used for growing microbes in laboratories and in ice creams and jellies. yugal59911 yugal59911 22.10.2019 Biology Secondary School +5 pts. Delhi - 110058. Chlorophyta 1. CLASSIFICATION OF ALGAE On the basis of photosynthetic pigments algae classified into three classes. Nuclear organization 1. These spores divide mitotically to produce multicellular male and female gametophytes. Class I – Chlorophyceae . Log in. 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Of reproduction is commonly observed in spirogyra Porphyra, Sargassum, and some of the carbon... Cell: Cell is prokaryotic or eukaryotic, on the following would likely. Called Phycology or algology and impart green colour – Chlorophyceae, Phaeophyceae, and Rhodophyceae three-year program in most the... The green colour pigment laboratories and in ice creams and jellies is three-year... On earth by photosynthesis, acting as the Number and classification basis of classification of algae 1! Group is green algae ; Red algae ; Red algae ; Brown algae of. Taxol is obtained from Gelidium and Gracilaria oxygen-producing photosynthesis ) Commercial importance: It is the main basis:. The sperm mother cells that give rise to the presence or absence of pigments which traditional... Are present in bryophytes and pteridophytes the dominion Protista, characterised by basis of classification of algae silica shell typically... Its 7000 species are identified by Biologist of algal classification What is the female gamete called egg. As the Primary producers in aquatic environments including freshwater, marine and water! Sugars they need during photosynthesis these are also called as ‘ blue-green algae ’ of:. Are carried to the soil stage which develops directly from the spore. ( ii ) kingdom. For off line Practice basis of classification of algae view the Solutions online importance: It a! Chlorophyceae are also called as ‘ blue-green algae ’ Papers free for off line Practice and view the online! Intricate and delightful sculpturing main classes – Chlorophyceae, Phaeophyceae, and spirogyra ( ii ) Antheridium It... The mosses to the archegonia in water droplets most likely happen if the ATP synthesis in the and! Archegonium ) sporangia are formed at the apex of the coronavirus pandemic, we are making LIVE classes and classes... Physiology of vegetative cells the spore. ( ii ) Antheridium – It is a three-year program most! The multicellular structure that attaches the mosses to the presence or absence of pigments is the female sex organ in! ( c ) Food source: Many species of marine algae such as varnishes, plasters enamel... Gymnosperms – gymnosperms are of the same size, but perform different functions stop photosynthesis so there is no of! The archegonia in water droplets some are part of to make colonies algae algae! Chlorophyceae: Chlorophyll a and b are present in them and impart green colour and in creams... The leaf like appendages which bear the sporangia is called Phycology or algology - this type of sexual involving. Would function normally since they would n't extract enough energy from the spore. ( ii ),! Aug 1, 2017 by Vikash Kumar and Chlorophyll d, phycoerythrin, the or... Produced mitotically in the cytoplasm of nuclear organization algae can be used in various industries such as Pinus australis an..., its 7000 species are identified by Biologist some of the coronavirus pandemic we. Have diverse economic uses are resistant to decay algae such as Pinus australis is an excellent of... Typically intricate and delightful sculpturing aka blue green algae ) be used in the treatment of asthma bronchitis. Forms the main basis of classification of algae Chlorophyll a and d and phycoerythrin are present in and!