Some algae are in filamentous form, e.g. (Rated Stub-class, Low-importance) Marine life portal. Doc: Ulothrix (Pond wool) NEET Notes | EduRev (ii) Uses in space research - Chlorella can be used in prolonged space fight for food, oxygen, disposal of carbon dioxide, organic matter. Exam Preparation - Biology Study Material and Notes View solution. One of the more striking facts pertaining to acidification is the increase in benthic filamentous green Zygnemataceae algae, particularly Zygogonium, Mougeotia, Spirogyra, and Zygnema, although other greens such as Ulothrix and Oedogonium can also become abundant (Table III).In a study of 32 Ontario (Canada) lakes with a pH range of 4.8 to 8.7, Wei et al. . This, is a fresh water alga growing on sub­stratum like sand particles, rocks etc. (6) Ulothrix zona (d) none of abov. Reproduction How Algae Grow. Reproduction How Algae Grow - THE LIVE LEARNS Biology Question Bank - 80 MCQs on "Plant Kingdom" - Answered! Ulothrix filaments in the guts of daphnids Average density and body length of daphnids decreased during the course of our study (Fig. 3. - Ulothrix implexa. (Other type of chioroplasts are c-shaped, collar-shaped or ring-shaped.) True False TRUE. Ulothrix and Chlamydomonas are green algae. MCQ on Algae with Answers PDF Download for FREE Ulothrix is a genus of non-branching filamentous green algae, generally found in fresh and marine water. Algae, Lichens and Bryophyta 5 . Chlorella pyrenoidosa - used for the study of photosynthesis. The two algae show definite seasonal patterns of abundance as well as distinct geographic . Middle cells; Dome-shaped apical cell. The remaining cells are green. 2. The attached filamentous green algae Ulothrix zonata and Cladophora glomerata are important members of the periphyton community in the rocky littoral zone of the Laurentian Great Lakes. How vegetative reproduction takeplace in Sargassum Important Features of Ulothrix: 1. Mosses are of great ecological importance because of (a) their contribution to preventing soil erosion. giving it the potential for becoming an important protein source in many parts of the world. These plants are primarily aquatic and can be found in freshwater, marine, moist surfaces of stone and wood and have a thalloid structure. Sketch, label and describe Ulothrix filament. Only about 10% of species are marine. Pick a style below, and copy the text for your bibliography. (a) Ulothrix (b) Nostoc (c) Spirogyra (d) Oedgonium Ans (b) . Spirogyra. Economic importance. Some algae are in filamentous form, e.g. 2. The MCQ Questions for Class 11 Biology with answers have been prepared as per the latest syllabus, NCERT books and examination pattern suggested in Standard 11 by CBSE, NCERT and KVS. Algae are of paramount importance as these are primary producers of energy-rich compounds, which form the basis of the food cycles of all aquatic animals. For each of the following research questions. 7.4 k. 5.5 k. Answer. 65. Classification: Important cases of Algae are: Class (1) Chlorophycrae (green algae): Pigments are present in plastids or chromatophores. Answer and Explanation: 49. They could be unicellular or multicellular. . C. multicellular body form, holdfast and oval shape chloroplast. Freshwater species. In chromatophores pyrenoids are present. 6. Students get through the TN Board 11th Bio Botany Important Questions Chapter 2 Plant Kingdom which is useful for their exam preparation.. TN State Board 11th Bio Botany Important Questions Chapter 2 Plant Kingdom. (i) Uses as food - Chlorella produces food rich in proteins, fats, vitamins, minerals. Kuetzing) Species. (1998) described a rich assemblage of bacteria and protists in the alluvial aquifers. Ulothrix. Volvox, Fucus.. Economic importance. Answer: germination of zygote. : U. flacca according to Wille 's conception); the other differs from U. subflaccida in reproducing only asexually. Answer the following short answers. Ulothrix zonata and Hydrurus foetidus are the common attached filamentous algae. Answer. These become more important when there is no supporting fossil evidence. A germination of zygote. Lithophyte species. All cereals, roots, pulses, vegetable crops, etc., we get from plants. Reproduction Algae reproduce by vegetative, asexual and sexual methods. Taxol- extracted from Taxus brevifolia, is an anti-cancer drug. It occurs in freshwater bodies but Ulothrix flacca is marine and U. implexa is lithophytic. Ulothrix can be described as a (a) filamentous alga lacking flagellated reproductive stages (c): Ulothrix is a green filamentous alga, belonging to class chlorophyceae . Fila­ments are covered by muci­lage. 153. The remaining are freshwater aquatics or semi-aquatics. Answer: B. Ques. The community is also present in areas with freshwater seepage. (iii) Uses as Larvicide - Chara gathers calcium over its surface and killed . Economic importance of algae. The cells are uninucleate. Enteromorpha minima is a characteristic epiphyte on all marginal plants and debris. Multiple Choice Questions are an important part of exams for Grade 11 Biology and if practiced properly can help you to . Related questions. Essay # 1. Ulothrix: It is an attached, un-branched, green, filamentous alga of fresh aerated waters. Importance of lichens as colonizers and indicators of environment. B formation of spores. Ulothrix zonata is the main species of Ulothrix which is found in India (A) Ulothrix Filament (b) T.S. Ulothrix is a filamentous green alga , which reproduces asexually by formation of a quadriflagellate zoospores.Link to the online chapter test :https://onlin. Ulothrix a genus of green algae in the form of unbranched, attached filaments consisting of one row of mononuclear cells with one parietal bandlike chloroplast with pyrenoids. Zoospores, spores, or isogametes are formed in the cells of the filament during reproduction. Usually there is a single nucleus in each cell, but the members of Siphonales and Cladophorales are coenocytic. Important Questions for NCERT Class 11 Biology Plant Kingdom. Algae are autotrophs, and grow in a wide range of habitats. Kingdom Plantae (Metaphyta) MCQ (Multiple Choice Questions and Answers) A) Ulothrix B) Spirogyra C) Chlamydomonas D) All the above Answer : C A) Chlamydomonas snowiae B) Chlamydomonas nivalis C) Both A and B D) None of the above Answer : B A) Glycogen B) Fats C) Oil globules D) Starch Answer : D A) Meiospores B) Alpanospores C) Hypnospores D) Zygospores Answer : B A) Zoospore B) Zygospore C . Which are the most primitive group of algae. C. Filamentous and unbranched. The shape of chloroplast shows much variation; it is cup shaped, (Chlamydomonas), girdle shaped (Ulothrix), reticulate (Cladophora, oedogonium), stellate, spiral (Spirogyra) or discoid. Ulothrix. Some of the marine forms make massive plant bodies, e.g. Answer (1 of 2): No, it is not, in two ways. They are proteinaceous bodies found in chromatophores and assist in the synthesis and storage of starch. 3. Ulothrix : Fresh water benthic alga, found in moving water of slow streams. Here, you will discover the NEET Biology MCQs and Answers for all Concepts as per the late. 3 In Ulothrix, reduction division takes place at the time of. Open Answer in App. kelps. The structural difference between Ulothrix and Chlamydomonas is that Ulothrix has a A. colonial body form, jelly-like material and cup shape chloroplast. (c) its capability to remove CO from the atmosphere. Gum of Cycas is used as an antidote against snake venom and juice of young leaves is used to cure blood vomiting Volvox colonies are found in (b) salt lakes (d) water falls 4. Thallus Structure. B. Solitary and branched. Important phylums: Algae: Habitat, general characters &uses, description of ulothrix& spirogyra. Codium, Ulva are edible members and are used as salad and vegetables. A. Ulothrix B. Spirogyra C. Oedogonium D. Chlamydomonas E. dinoflagellates. Chlorella lead an endozoic life in hydra and sponges whereas Cladophora crispata grow on the shells of molluscs. Algae are photosynthetic microorganisms that perform photosynthesis and produce oxygen (O 2) and consume carbon dioxide (CO 2) from the atmosphere. Chara (stonewort) What is a distinguishing feature of Oedogonium? (b) their contribution to ecological succession. Economic importance; Half of the total CO2 fixation is carried by algae through . A gametophyte is essentially a spore that develops from mitosis rather. I Q. 150+ important MCQs are given in this NEET question bank. Hence, this is the correct answer. Ulothrix Fucus Porphyra Spirogyra Algal Biofuel Recent developments in science and technology have enabled algae to be used as a source of fuel. Talk:Ulothrix speciosa. The present study, based on rearing experiments and herbarium investigation, deals with the taxonomy of three freshwater Ulothrix species; Ulothrix subtilis Kützing, U. tenerrima Kützing, and U. albicans Kützing. Sexual - a fusion of gametes, flagellated and similar size (Ulothrix), non-flagellated and similar (spirogyra)- isogamous. They increase in length of the filament takes place by ordinary cell divisions and by subsequent growth of individual cells, each of which may divide further. a. Agar-Agar is obtained from (a) Gelidium (b) Nostoc (c) Chlamydromonas (d) Ulothrix Ans (a) b. CBSE Class 11 Biology Plant Kingdom MCQs with answers available in Pdf for free download. The thallus of Ulothrix is multicellular, filamentous, unbranched and bright green in colour. Which of the following is the most advanced group of algae. Thallus Structure. Kingdom Plantae: Importance. Caulerapa) and haplo-diplontic (eg. a. Agar-Agar is obtained from (a) Gelidium (b) Nostoc (c) Chlamydromonas (d) Ulothrix Ans (a) b. C. 7. Plants play a significant role in maintaining the atmosphere. From Wikipedia, the free encyclopedia. - Ulothrix zonata. Fusion of a large, non-motile female gamete (egg) and a small motile male gamete (sperm) is known as Oogamous. 2. Ulothrix 3. - Ulothrix zonata. A positive, significant correlation was found between average density and body length of daphnids ( R2 = 0.61, P = 0.03). In Ulothrix, reduction division takes place at the time of. Spirogyra (common names include water silk, mermaid's tresses, and blanket weed) is a filamentous charophyte green alga of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is characteristic of the genus. Answer: The general character of Bryophytes: Bryophytes are non - vascular cryptogams due to absence of xylem & phloem. Vegetative structure of Spirogyra. (1989) found that of the 21 possible . Step by step video, text & image solution for " In Ulothrix, the cell contains " by Biology experts to help you in doubts & scoring excellent marks in Class 11 exams. Ulothrix Order: Ulotrichales Family: Ulotrichaceae Genus: Ulothrix Kützing (orth. Many fungi contain a high amount of fat such as Endomyces vernalis, Penicillium javanicum and Oidium lactis. They are cylindrical and quadrate. Show me the items on the check sheet (page 10-2) and have me initial that page to indicate that you have shown them to me. 5. Algae are good source of carbohydrates, fats, proteins, and vitamins A, B, C, and E as well as the minerals like iron, potassium, magnesium etc. 2. Option E: Sargassum belongs to brown algae, Laminaria, Fucus, and Dictyota belong to the . Here you will find NEET MCQ questions on the Class 11 Biology Chapter "Plant Kingdom" based on the NCERT textbook. 4. Give the classification and external morphology of Ulothrix. Ulothrix, Chlamydomonas, Spirogyra, Chara, Volvox, Chlorella) diplontic (eg. Global demand for petroleum products and declining environmental health has prompted the use of eco-friendly alternatives such as algal biofuel. A type of red seaweed, was a substitute for potatoes during famine in Ireland in the 1800's. . Ulothrix and Spirogyra. These become more important when there is no supporting fossil evidence. Which of the following exhibit isogamous reproduction? Meaning of Algae: Although Linnaeus (1753) first introduced the name Algae, but by Algae he meant the Hepaticae. Ulothrix zonata is the main species of Ulothrix which is found in India (A) Ulothrix Filament (b) T.S. Which one of the following algae has the ability to fix the atmospheric nitrogen? The importance of Kingdom Plantae is mentioned below: 1. Practice important Questions. Question 1. Reproduction: Vegetative, asexual and sexual methods of reproduction are present in algae. B. leaf-like body form, holdfast and oval shape chloroplast. Importance of lichens as colonizers and indicators of environment. 49. Solve the below free NEET mock test for a better understanding of the various topics. It is used in chemotherapy to treat lung cancer, ovarian cancer, pancreatic cancer, breast cancer, etc. The plant body is unbranched, filamentous and differentiated into apex and base. 4 Agar, which is the solidifying agent in many bacterial culture media, is part of the cell wall of. Presence of basal rhizoidal cell in Ulothrix is an example of. The only The plant body is a gametophyte and it is conspicuous, long - lived. Describe the various methods of asexual reproduction in Ulothrix. 6. 6 Marks Questions: 1. Economic Importance of Fungi in Agriculture The yeasts, are the best source of vitamin B complex. Ulothrix is a genus of green algae in the family Ulotrichaceae. We are directly or indirectly dependent on plants. Laboratory cultures have to be used for unequivocal determination. Fixators of CO 2: Algae are one of the major producers in an ecosystem.They are responsible for fixing more than 50% of the world's total CO 2.In oceans, since plants are absent, algae form the base of food chains, and support the whole . In floodplain spring brooks, large patches of Enteromorpha sp. Chapter: 5 Study of Life History of Sargassum 2 Marks Questions: 1. . Ulva, Cladophora) pattern of life cycle. Some algae , such as Trentepohlia, Rhodochytrium, grows on the surface of angiosperms leaves, called epiphyllophytes. It is a member of class-Chlorophyceae. Oedogonium, Ulothrix etc., other examples are Coleochaete nitellarum grows on Nitella and Chara. In blue- green algae such pieces of trichomes are called hormogonia. Ulothrix Reproduction Mosses and Liverwort life cycle of all … Ulothrix and Spirogyra. Ulothrix flacca and Enteromorpha minima are important forms occurring at Canvey although absent from Ynyslas. When these algae occur together, Ulothrix occupies the splash zone and Cladophora grows in deeper water. Majority of them are aquatic, marine (Gracilaria, and Sargassum) and freshwater (Oedogonium, and Ulothrix) and also found in soils (Fritschiella, and Vaucheria). Video Solution: In Ulothrix, the cell contains. ALGAE AND FUNGI Spirogyra Agaricus 1 R. Ulothrix I o Ulothrix I 8. Plant body : Filamentous, unbranched filaments having 3 types of cells. Asexual reproduction in Spirogyra. The actual delimitation of a group of plants from their macroscopical features and naming as Algae was done by A. L. De Jussieu (1789). The thallus breaks into pieces and each piece is capable of regeneration. . Used by exo-biologist and known as . Ulothrix, Oedogonium, and patterns of reproduction of these and Ulva. Ulothrix (division Chlorophyta) A genus of unbranched, filamentous, green algae, each cell of which contains a single chloroplast which forms an incomplete band around the middle of the cell. The type of sexual reproduction in . Agar-Agar is derived from. Answer: Economic importance of Algae: Question 8. They can exist singly or in colonies like the Volvox or may be unicellular like Chlamydomonas or may even have a filamentous structure like Spirogyra and Ulothrix. - Ulothrix implexa. Also explain your reasoning for why you chose the study type. In Ulothrix meiosis takes place in? Spirogyra (watersilk) 5. kelps. It controls cell division by inhibiting spindle fibre formation. (a) Volvox globator (c) Chlamydomonas nivalis 2. View solution. Algae as primary producers- algae provides the base or beginning of most aquatic animals or organisms because of their photosynthetic activities so it is also known as primary producers of organic matter. MCQ on Algae with Answers PDF Download. Basal cell of Ulothrix is. They fix almost half of atmospheric carbon di oxide. 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. 4. Anisogamous- dissimilar in size, e.g., Eudorina, Oogamous- one large (non-motile) female and smaller motile male, e.g., Volvox, Fucus. Plants which are not differentiated into roots, stem and leaves are grouped under. Enumerate the general character of Bryophytes. Most of the algae inhabit the aquatic environment, either freshwater or marine habitats. and Nitzschia spp., indicators of naturally high nitrogen concentrations, often occur at the spring heads. (a) Ulothrix (b) Nostoc (c) Spirogyra (d) Oedgonium Ans (b) . Freshwater species. This module discussed the importance of selecting a suitable study design and methods for data analysis based on a research question. A student observed an algae with chlorophyll a, b and phycoerythrin, it should belong to (a) Phaeophyta (b) Rhodophyta (c) Chlorophyta (d) Bacillariophyta. Palmella stage in Ulothrix. What is the common name of Ulothrix? You are given an unknown plant to study in the laboratory. which remains scattered within the cytoplasm.. Reproduction of Spirogyra. Algae reproduce by vegetative, asexual and sexual methods. The filaments are attached at their bases to rocks, etc., in marine or fresh water. Apr 22, 2019 - Classification Of Kingdom Plantae, Classification Of Kingdom Plantae, Economic importance Algae. They also contain other cellular organelles such as endoplasmic reticulum, Golgi bodies (dictyosomes), mitochondria, ribosomes, etc. Ellis et al. Starch is photosynthetic food product, but rarely oil as in vaucheria. Plants provide food to nearly all organisms, including humans. state the type of study described by each of the following paragraphs. 3. Tabulate the economic importance of algae. Ulothrix can be described as a (a) filamentous alga lacking flagellated reproductive stages (b) membranous alga producing zoospores (c) filamentous alga with flagellated reproductive stages (d) non-motile colonial alga lacking zoospores. The number of flagella produced by motile cells in. Bacteria: structure - types of nutrition, reproduction and economic importance. Vegetative The reproduction. . Algae is the thalloid plant of the Plantae kingdom. The seaweeds and pond scums are the most common forms of algae. Usually there is a single nucleus in each cell, but the members of Siphonales and Cladophorales are coenocytic. 1. of a cell (C) Structure of chloroplast. Similar to land plants, algae are at the base of the food chain, and, given that plants are virtually absent from the oceans, the existence of nearly all marine life—including whales, seals . C formation of gametes. " Ulothrix . লিখিত জবাব. The life-cycle of Ulothrix is : (a) haplontic (c) haplobiontic (b) diplontic (d) diplobiontic 3. Which of the algae is responsible for red colour of red sea. The most common method of vegetative reproduction is fragmentation. Important Characteristics of Green Algae: Green Algae are put under the division Chlorophyta comprising of more than 7,000 species. Answer: (a) 7. Cladophora 4. It is visually recognised as a closely adherent, often shiny, green mat of filamentous growth. Algae are chief producers in the marine ecosystem. Asexual reproduction. An assemblage of the small un-branched filamentous green seaweeds Ulothrix flacca, Urospora penicilliformis and Urospora wormskioldii at High Water Spring Tide level on steep and vertical rock often influenced by freshwater. It is commonly found in freshwater habitats, and there are more than 400 species of Spirogyra in the world. Abstract. Spirogyra is a green algae belonging to the class chlorophyceae. This article is part of WikiProject Marine life, an attempt at creating a standardized, informative, comprehensive and easy-to-use resource on marine life. View Answer. Multiple Choice Questions on Algae - Algae can be found in a variety of environments, including oceans, rivers, and lakes, as well as ponds, brackish water, and even snow.Try our Multiple Choice Questions on Algae to see if you can get all the Multiple Choice Questions on Algae answers right for the questions below. 864 Qs. 3 ). The shape of chloroplast shows much variation; it is cup shaped, (Chlamydomonas), girdle shaped (Ulothrix), reticulate (Cladophora, oedogonium), stellate, spiral (Spirogyra) or discoid. Ulothrix is not a plant, it is a green algae, that uses asexual (vegetative) reproduction rather than sexual reproduction, which is what a gametophyte producing algae or plant uses. Some of the marine forms make massive plant bodies, e.g. Both are abundant in the moister marginal zones, Ulothrix especially in late winter and spring. Economic importance of chlorophyceae-. Therefore they are used as source of food. Spirogyra was so-named because of the spiral shape of its chloroplasts. Commercial products from algae- many products are derived from algal cell wall for economic value. The basal colourless rhizoidal cell called hold fast, meant for attachment. True False . (a) fresh water ponds (c) sea water The structure of Volvox is: (a) Unicellular (c) thalloid (b . 7. They are also known as microscopic plants. Green Algae occur in both aquatic and semi-aquatic habitats. Reproduction: Vegetative, asexual and sexual methods of reproduction are present in algae. During photosynthesis, algae produce at least half of the oxygen in Earth's atmosphere. NEET Biology is the vey important paper in the medical entrance exam. Step by step text solution for " উলোথ্রিক্স এবং স্পিরোগিরা " by Biology experts to help you in doubts & scoring excellent marks in Class 11 exams. What is Dulse, and what was its importance in the 1800's? NEET Biology is the vey important paper in the medical entrance exam. Iodine is obtained from. Some algae such as Pleurococcus sp. Plants which are not differentiated roots, stems and leaves are grouped under. Structure of Algae. View solution. Dinesh Vol I Biology Pg 138 to 189 . Option D: Volvox belongs to chlorophyceae green algae, Spirogyra belongs to zygnematophyceae, Ulothrix belongs to chlorophyceae green algae and Sargassum belongs to brown algae. They are attached to a solid substratum by means of a colourless lowermost cell called holdfast. Ques. Eg. A. Colonial and branched. They have central vacuoles. Therefore, this is the incorrect option. Of special importance are developmental features and life cycle stages. TRUE. (d) Both (a) and (b) (d) Both (a) and (b) 154. WikiProject Marine life. The chloroplast contains one (U. rorida) to many (U. zonata) pyrenoids.

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