The structural difference between Ulothrix and Chlamydomonas is that Ulothrix has a A. colonial body form, jelly-like material and cup shape chloroplast. Bacteria: structure - types of nutrition, reproduction and economic importance. In Ulothrix, the cell contains Importance of lichens as colonizers and indicators of environment. Which of the following is the most advanced group of algae. 2. - Ulothrix zonata. Chapter: 5 Study of Life History of Sargassum 2 Marks Questions: 1. Important Characteristics of Green Algae: Green Algae are put under the division Chlorophyta comprising of more than 7,000 species. Apr 22, 2019 - Classification Of Kingdom Plantae, Classification Of Kingdom Plantae, Economic importance Algae. How vegetative reproduction takeplace in Sargassum A. Ulothrix B. Spirogyra C. Oedogonium D. Chlamydomonas E. dinoflagellates. The cells are uninucleate. CBSE Class 11 Biology Plant Kingdom MCQs with answers available in Pdf for free download. Fusion of a large, non-motile female gamete (egg) and a small motile male gamete (sperm) is known as Oogamous. What is the common name of Ulothrix? Many fungi contain a high amount of fat such as Endomyces vernalis, Penicillium javanicum and Oidium lactis. Multiple Choice Questions are an important part of exams for Grade 11 Biology and if practiced properly can help you to . 3 In Ulothrix, reduction division takes place at the time of. Some algae , such as Trentepohlia, Rhodochytrium, grows on the surface of angiosperms leaves, called epiphyllophytes. 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. Usually there is a single nucleus in each cell, but the members of Siphonales and Cladophorales are coenocytic. (c) its capability to remove CO from the atmosphere. Oedogonium, Ulothrix etc., other examples are Coleochaete nitellarum grows on Nitella and Chara. Reproduction: Vegetative, asexual and sexual methods of reproduction are present in algae. a. Agar-Agar is obtained from (a) Gelidium (b) Nostoc (c) Chlamydromonas (d) Ulothrix Ans (a) b. . Structure of Algae. NEET Biology is the vey important paper in the medical entrance exam. (1989) found that of the 21 possible . Some of the marine forms make massive plant bodies, e.g. Algae reproduce by vegetative, asexual and sexual methods. These become more important when there is no supporting fossil evidence. Algae are chief producers in the marine ecosystem. 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. 49. - Ulothrix implexa. Answer: B. Ques. These plants are primarily aquatic and can be found in freshwater, marine, moist surfaces of stone and wood and have a thalloid structure. (d) Both (a) and (b) (d) Both (a) and (b) 154. Chlorella lead an endozoic life in hydra and sponges whereas Cladophora crispata grow on the shells of molluscs. Important phylums: Algae: Habitat, general characters &uses, description of ulothrix& spirogyra. . state the type of study described by each of the following paragraphs. Agar-Agar is derived from. 5. In Ulothrix meiosis takes place in? C. Filamentous and unbranched. WikiProject Marine life. Answer: The general character of Bryophytes: Bryophytes are non - vascular cryptogams due to absence of xylem & phloem. The type of sexual reproduction in . True False . Thallus Structure. For each of the following research questions. 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. 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. Anisogamous- dissimilar in size, e.g., Eudorina, Oogamous- one large (non-motile) female and smaller motile male, e.g., Volvox, Fucus. Essay # 1. 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. B formation of spores. You are given an unknown plant to study in the laboratory. Therefore, this is the incorrect option. 2. 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. Palmella stage in Ulothrix. Open Answer in App. True False TRUE. The plant body is unbranched, filamentous and differentiated into apex and base. Commercial products from algae- many products are derived from algal cell wall for economic value. The thallus of Ulothrix is multicellular, filamentous, unbranched and bright green in colour. It is a member of class-Chlorophyceae. Majority of them are aquatic, marine (Gracilaria, and Sargassum) and freshwater (Oedogonium, and Ulothrix) and also found in soils (Fritschiella, and Vaucheria). Meaning of Algae: Although Linnaeus (1753) first introduced the name Algae, but by Algae he meant the Hepaticae. Plant body : Filamentous, unbranched filaments having 3 types of cells. Both are abundant in the moister marginal zones, Ulothrix especially in late winter and spring. - Ulothrix implexa. Some algae such as Pleurococcus sp. Ulothrix can be described as a (a) filamentous alga lacking flagellated reproductive stages The most common method of vegetative reproduction is fragmentation. . The genus Spirogyra comprises more than 300 species and most of them are free floating algae. Ulothrix : Fresh water benthic alga, found in moving water of slow streams. NEET Biology is the vey important paper in the medical entrance exam. Also explain your reasoning for why you chose the study type. Sexual - a fusion of gametes, flagellated and similar size (Ulothrix), non-flagellated and similar (spirogyra)- isogamous. 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 . In floodplain spring brooks, large patches of Enteromorpha sp. The importance of Kingdom Plantae is mentioned below: 1. Economic importance of chlorophyceae-. Algae are photosynthetic microorganisms that perform photosynthesis and produce oxygen (O 2) and consume carbon dioxide (CO 2) from the atmosphere. Ulothrix 3. A student observed an algae with chlorophyll a, b and phycoerythrin, it should belong to (a) Phaeophyta (b) Rhodophyta (c) Chlorophyta (d) Bacillariophyta. (a) fresh water ponds (c) sea water The structure of Volvox is: (a) Unicellular (c) thalloid (b . These become more important when there is no supporting fossil evidence. Codium, Ulva are edible members and are used as salad and vegetables. Algae can be microscopic or even as large as 60 meters in length. 864 Qs. Question 1. Ulothrix zonata and Hydrurus foetidus are the common attached filamentous algae. The actual delimitation of a group of plants from their macroscopical features and naming as Algae was done by A. L. De Jussieu (1789). Ulothrix, Chlamydomonas, Spirogyra, Chara, Volvox, Chlorella) diplontic (eg. Mosses are of great ecological importance because of (a) their contribution to preventing soil erosion. The only View Answer. Here you will find NEET MCQ questions on the Class 11 Biology Chapter "Plant Kingdom" based on the NCERT textbook. In chromatophores pyrenoids are present. Pick a style below, and copy the text for your bibliography. Answer and Explanation: 49. kelps. Solve the below free NEET mock test for a better understanding of the various topics. Answer Now and help others. Taxol- extracted from Taxus brevifolia, is an anti-cancer drug. Economic importance; Half of the total CO2 fixation is carried by algae through . Used by exo-biologist and known as . 4. Volvox colonies are found in (b) salt lakes (d) water falls 4. Volvox, Fucus.. Economic importance. grow on barks called epiphloeophytes. They are attached to a solid substratum by means of a colourless lowermost cell called holdfast. 3. Economic importance. The shape of chloroplast shows much variation; it is cup shaped, (Chlamydomonas), girdle shaped (Ulothrix), reticulate (Cladophora, oedogonium), stellate, spiral (Spirogyra) or discoid. 7. 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. C. 7. The thallus of Ulothrix is multicellular, filamentous, unbranched and bright green in colour. It is commonly found in freshwater habitats, and there are more than 400 species of Spirogyra in the world. 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. giving it the potential for becoming an important protein source in many parts of the world. Plants play a significant role in maintaining the atmosphere. What is Dulse, and what was its importance in the 1800's? Chlorella pyrenoidosa - used for the study of photosynthesis. Ulothrix filaments in the guts of daphnids Average density and body length of daphnids decreased during the course of our study (Fig. Therefore they are used as source of food. 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. Ulva, Cladophora) pattern of life cycle. Important Features of Ulothrix: 1. Spirogyra is a green algae belonging to the class chlorophyceae. The pigmentation, reserve food material and flagellation differ among the algal groups. A gametophyte is essentially a spore that develops from mitosis rather. This module discussed the importance of selecting a suitable study design and methods for data analysis based on a research question. 4. View solution. (iii) Uses as Larvicide - Chara gathers calcium over its surface and killed . They are proteinaceous bodies found in chromatophores and assist in the synthesis and storage of starch. (ii) Uses in space research - Chlorella can be used in prolonged space fight for food, oxygen, disposal of carbon dioxide, organic matter. Ques. Which of the algae is responsible for red colour of red sea. In Ulothrix, reduction division takes place at the time of. In blue- green algae such pieces of trichomes are called hormogonia. Importance of lichens as colonizers and indicators of environment. B. Solitary and branched. Ulothrix Order: Ulotrichales Family: Ulotrichaceae Genus: Ulothrix Kützing (orth. Iodine is obtained from. (6) Ulothrix zona (d) none of abov. of a cell (C) Structure of chloroplast. Habitat: they are commonly found floating in fresh water . Vegetative structure of Spirogyra. Gum of Cycas is used as an antidote against snake venom and juice of young leaves is used to cure blood vomiting Ulothrix flacca and Enteromorpha minima are important forms occurring at Canvey although absent from Ynyslas. Talk:Ulothrix speciosa. Answer the following short answers. 150+ important MCQs are given in this NEET question bank. লিখিত জবাব. The basal colourless rhizoidal cell called hold fast, meant for attachment. Which of the following exhibit isogamous reproduction? (b) their contribution to ecological succession. Only about 10% of species are marine. Reproduction Algae reproduce by vegetative, asexual and sexual methods. . Middle cells; Dome-shaped apical cell. 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. Plants provide food to nearly all organisms, including humans. Option E: Sargassum belongs to brown algae, Laminaria, Fucus, and Dictyota belong to the . a. Agar-Agar is obtained from (a) Gelidium (b) Nostoc (c) Chlamydromonas (d) Ulothrix Ans (a) b. " Ulothrix . Lithophyte species. This article is part of WikiProject Marine life, an attempt at creating a standardized, informative, comprehensive and easy-to-use resource on marine life. B. leaf-like body form, holdfast and oval shape chloroplast. A positive, significant correlation was found between average density and body length of daphnids ( R2 = 0.61, P = 0.03). Reproduction: Vegetative, asexual and sexual methods of reproduction are present in algae. Global demand for petroleum products and declining environmental health has prompted the use of eco-friendly alternatives such as algal biofuel. Green Algae occur in both aquatic and semi-aquatic habitats. Answer: germination of zygote. var. C. multicellular body form, holdfast and oval shape chloroplast. 1. Economic importance of Algae-. Ulothrix, Oedogonium, and patterns of reproduction of these and Ulva. The chloroplast contains one (U. rorida) to many (U. zonata) pyrenoids. (c): Ulothrix is a green filamentous alga, belonging to class chlorophyceae . They are also known as microscopic plants. (Rated Stub-class, Low-importance) Marine life portal. View solution. Some algae are in filamentous form, e.g. kelps. Here, you will discover the NEET Biology MCQs and Answers for all Concepts as per the late. 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. Ulothrix zonata is the main species of Ulothrix which is found in India (A) Ulothrix Filament (b) T.S. The shape of chloroplast shows much variation; it is cup shaped, (Chlamydomonas), girdle shaped (Ulothrix), reticulate (Cladophora, oedogonium), stellate, spiral (Spirogyra) or discoid. They fix almost half of atmospheric carbon di oxide. (a) Ulothrix (b) Nostoc (c) Spirogyra (d) Oedgonium Ans (b) . Asexual reproduction. Lithophyte species. Presence of basal rhizoidal cell in Ulothrix is an example of. From Wikipedia, the free encyclopedia. Freshwater species. Some of the marine forms make massive plant bodies, e.g. Enumerate the general character of Bryophytes. Plants which are not differentiated roots, stems and leaves are grouped under. (i) Uses as food - Chlorella produces food rich in proteins, fats, vitamins, minerals. They also contain other cellular organelles such as endoplasmic reticulum, Golgi bodies (dictyosomes), mitochondria, ribosomes, etc. I Q. . View solution. 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 and Chlamydomonas are green algae. Freshwater species. 3. Plants which are not differentiated into roots, stem and leaves are grouped under. Answer: (a) 7. The life-cycle of Ulothrix is : (a) haplontic (c) haplobiontic (b) diplontic (d) diplobiontic 3. Answer. Kingdom Plantae: Importance. Fungi: structure description of Rhizopus and yeast and their economic importance, Fermentation. 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 . Ulothrix zonata is the main species of Ulothrix which is found in India (A) Ulothrix Filament (b) T.S. Kuetzing) Species. Ulothrix is a filamentous green alga , which reproduces asexually by formation of a quadriflagellate zoospores.Link to the online chapter test :https://onlin. They have central vacuoles. When these algae occur together, Ulothrix occupies the splash zone and Cladophora grows in deeper water. Thallus Structure. (1998) described a rich assemblage of bacteria and protists in the alluvial aquifers. 3 ). Abstract. Enteromorpha minima is a characteristic epiphyte on all marginal plants and debris. Algae are autotrophs, and grow in a wide range of habitats. This, is a fresh water alga growing on sub­stratum like sand particles, rocks etc. (Other type of chioroplasts are c-shaped, collar-shaped or ring-shaped.) 3. A. Colonial and branched. Algae, Lichens and Bryophyta 5 . Zoospores, spores, or isogametes are formed in the cells of the filament during reproduction. 65. Related questions. Ulothrix is a genus of green algae in the family Ulotrichaceae. Answer (1 of 2): No, it is not, in two ways. Algae is the thalloid plant of the Plantae kingdom. Asexual reproduction in Spirogyra. 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. Ulothrix: It is an attached, un-branched, green, filamentous alga of fresh aerated waters. All cereals, roots, pulses, vegetable crops, etc., we get from plants. Spirogyra (watersilk) 5. (a) Volvox globator (c) Chlamydomonas nivalis 2. Pigments are chlorophyll, xanthophylls and carotene. They could be unicellular or multicellular. : U. flacca according to Wille 's conception); the other differs from U. subflaccida in reproducing only asexually. 2. Of special importance are developmental features and life cycle stages. Eg. We are directly or indirectly dependent on plants. TRUE. Practice important Questions. Answer: Economic importance of Algae: Question 8. and Nitzschia spp., indicators of naturally high nitrogen concentrations, often occur at the spring heads. of a cell (C) Structure of chloroplast. A type of red seaweed, was a substitute for potatoes during famine in Ireland in the 1800's. . 6 Marks Questions: 1. Ulothrix and Spirogyra. Fila­ments are covered by muci­lage. They are cylindrical and quadrate. Dinesh Vol I Biology Pg 138 to 189 . 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. Some algae are in filamentous form, e.g. Spirogyra was so-named because of the spiral shape of its chloroplasts. ALGAE AND FUNGI Spirogyra Agaricus 1 R. Ulothrix I o Ulothrix I 8. The community is also present in areas with freshwater seepage. Starch is photosynthetic food product, but rarely oil as in vaucheria. 6. 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. - Ulothrix zonata. Ulothrix. The seaweeds and pond scums are the most common forms of algae. (a) Ulothrix (b) Nostoc (c) Spirogyra (d) Oedgonium Ans (b) . C formation of gametes. Classification: Important cases of Algae are: Class (1) Chlorophycrae (green algae): Pigments are present in plastids or chromatophores. 6. Ulothrix and Spirogyra. which remains scattered within the cytoplasm.. Reproduction of Spirogyra. Sketch, label and describe Ulothrix filament. 153. 7.4 k. 5.5 k. Answer. Basal cell of Ulothrix is. MCQ on Algae with Answers PDF Download. During photosynthesis, algae produce at least half of the oxygen in Earth's atmosphere. The remaining are freshwater aquatics or semi-aquatics. Step by step text solution for " উলোথ্রিক্স এবং স্পিরোগিরা " by Biology experts to help you in doubts & scoring excellent marks in Class 11 exams. 2. Essay on the Review of Algological Studies (Algae) in India. Two new species are being described: one of them is structurally quite similar to Ulothrix speciosa (syn. Give the classification and external morphology of Ulothrix. Reproduction How Algae Grow. Agaricus I o Agaricus I (Algae) I I (phycology) I seaweed' I 90,000 Algae, Lichens and Bryophyta 5 . 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 . View solution. Prepare for a quiz. Ulothrix Fucus Porphyra Spirogyra Algal Biofuel Recent developments in science and technology have enabled algae to be used as a source of fuel. 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 controls cell division by inhibiting spindle fibre formation. 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. Hence, this is the correct answer. It is used in chemotherapy to treat lung cancer, ovarian cancer, pancreatic cancer, breast cancer, etc. Cladophora 4. 4 Agar, which is the solidifying agent in many bacterial culture media, is part of the cell wall of. Option D: Volvox belongs to chlorophyceae green algae, Spirogyra belongs to zygnematophyceae, Ulothrix belongs to chlorophyceae green algae and Sargassum belongs to brown algae. 4. Important Questions for NCERT Class 11 Biology Plant Kingdom. Laboratory cultures have to be used for unequivocal determination. Usually there is a single nucleus in each cell, but the members of Siphonales and Cladophorales are coenocytic. 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. The remaining cells are green. Economic Importance of Fungi in Agriculture The yeasts, are the best source of vitamin B complex. Video Solution: In Ulothrix, the cell contains. Which are the most primitive group of algae. Jump to navigation Jump to search. Which one of the following algae has the ability to fix the atmospheric nitrogen? 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. Most of the algae inhabit the aquatic environment, either freshwater or marine habitats. However, some species like S. rhizopus, S. dubia etc are found attached to substratum by the means of rhizoids. Which one of the following algae has the ability to fix the atmospheric nitrogen? A germination of zygote. Tabulate the economic importance of algae. Economic importance of algae. The unique feature of algae is the ability to perform photosynthesis. Ulothrix is a genus of non-branching filamentous green algae, generally found in fresh and marine water. Caulerapa) and haplo-diplontic (eg. Ulothrix Reproduction Mosses and Liverwort life cycle of all … 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. 3. Text Solution. D formation of zoospores. The thallus breaks into pieces and each piece is capable of regeneration. It is visually recognised as a closely adherent, often shiny, green mat of filamentous growth. Chara (stonewort) What is a distinguishing feature of Oedogonium? Ellis et al. The two algae show definite seasonal patterns of abundance as well as distinct geographic . The filaments are attached at their bases to rocks, etc., in marine or fresh water. Ulothrix. The plant body is a gametophyte and it is conspicuous, long - lived. It occurs in freshwater bodies but Ulothrix flacca is marine and U. implexa is lithophytic. Describe the various methods of asexual reproduction in Ulothrix. Spirogyra. The number of flagella produced by motile cells in. Vegetative The reproduction.

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