(Rated Stub-class, Low-importance) Marine life portal. Spirogyra was so-named because of the spiral shape of its chloroplasts. algae - Ecological and commercial importance | Britannica They could be unicellular or multicellular. Ellis et al. B. Solitary and branched. In Ulothrix, reduction division takes place at the time of. Some algae are in filamentous form, e.g. Fungi: structure description of Rhizopus and yeast and their economic importance, Fermentation. Algae: Algae Classification, Unique Features, Concepts ... Which one of the following algae has the ability to fix the atmospheric nitrogen? (c) its capability to remove CO from the atmosphere. I Q. Spirogyra is a green algae belonging to the class chlorophyceae. (a) fresh water ponds (c) sea water The structure of Volvox is: (a) Unicellular (c) thalloid (b . The thallus of Ulothrix is multicellular, filamentous, unbranched and bright green in colour. In floodplain spring brooks, large patches of Enteromorpha sp. In Ulothrix, the cell contains Is Ulothrix a gametophyte plant? Why? - Quora Text Solution. The remaining cells are green. Algae can be microscopic or even as large as 60 meters in length. Asexual reproduction in Spirogyra. (iii) Uses as Larvicide - Chara gathers calcium over its surface and killed . Structure of Algae. Some algae , such as Trentepohlia, Rhodochytrium, grows on the surface of angiosperms leaves, called epiphyllophytes. The cells are uninucleate. Used by exo-biologist and known as . Algae are autotrophs, and grow in a wide range of habitats. 2. The importance of Kingdom Plantae is mentioned below: 1. Ulothrix Order: Ulotrichales Family: Ulotrichaceae Genus: Ulothrix Kützing (orth. Ulothrix zonata is the main species of Ulothrix which is found in India (A) Ulothrix Filament (b) T.S. However, some species like S. rhizopus, S. dubia etc are found attached to substratum by the means of rhizoids. Caulerapa) and haplo-diplontic (eg. - Ulothrix implexa. Economic importance of chlorophyceae-. Asexual reproduction. Basal cell of Ulothrix is. Therefore, this is the incorrect option. (a) Ulothrix (b) Nostoc (c) Spirogyra (d) Oedgonium Ans (b) . WikiProject Marine life. Ulothrix zonata is the main species of Ulothrix which is found in India (A) Ulothrix Filament (b) T.S. Therefore they are used as source of food. The only Two new species are being described: one of them is structurally quite similar to Ulothrix speciosa (syn. Thallus Structure. 49. NEET Biology is the vey important paper in the medical entrance exam. Question 1. Spirogyra (watersilk) 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. Ulva, Cladophora) pattern of life cycle. Chapter: 5 Study of Life History of Sargassum 2 Marks Questions: 1. 4. (1998) described a rich assemblage of bacteria and protists in the alluvial aquifers. C. 7. Reproduction How Algae Grow. 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. A positive, significant correlation was found between average density and body length of daphnids ( R2 = 0.61, P = 0.03). In chromatophores pyrenoids are present. We are directly or indirectly dependent on plants. Kingdom Plantae: Importance. - Ulothrix zonata. Ulothrix flacca and Enteromorpha minima are important forms occurring at Canvey although absent from Ynyslas. What is the common name of Ulothrix? Some algae such as Pleurococcus sp. Plants play a significant role in maintaining the atmosphere. 150+ important MCQs are given in this NEET question bank. Enteromorpha minima is a characteristic epiphyte on all marginal plants and debris. 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. Commercial products from algae- many products are derived from algal cell wall for economic value. 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. Video Solution: In Ulothrix, the cell contains. The chloroplast contains one (U. rorida) to many (U. zonata) pyrenoids. 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. 864 Qs. Talk:Ulothrix speciosa. kelps. Answer the following short answers. 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. This module discussed the importance of selecting a suitable study design and methods for data analysis based on a research question. 4. 3 ). Most of the algae inhabit the aquatic environment, either freshwater or marine habitats. Apr 22, 2019 - Classification Of Kingdom Plantae, Classification Of Kingdom Plantae, Economic importance Algae. Algae reproduce by vegetative, asexual and sexual methods. 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 . (i) Uses as food - Chlorella produces food rich in proteins, fats, vitamins, minerals. Ulothrix and Chlamydomonas are green algae. The most common method of vegetative reproduction is fragmentation. Oedogonium, Ulothrix etc., other examples are Coleochaete nitellarum grows on Nitella and Chara. Which of the algae is responsible for red colour of red sea. giving it the potential for becoming an important protein source in many parts of the world. Answer: (a) 7. They fix almost half of atmospheric carbon di oxide. View solution. Answer and Explanation: 49. Here you will find NEET MCQ questions on the Class 11 Biology Chapter "Plant Kingdom" based on the NCERT textbook. (6) Ulothrix zona (d) none of abov. The life-cycle of Ulothrix is : (a) haplontic (c) haplobiontic (b) diplontic (d) diplobiontic 3. Important Characteristics of Green Algae: Green Algae are put under the division Chlorophyta comprising of more than 7,000 species. . Ques. A. Colonial and branched. It is used in chemotherapy to treat lung cancer, ovarian cancer, pancreatic cancer, breast cancer, etc. Plant body : Filamentous, unbranched filaments having 3 types of cells. a. Agar-Agar is obtained from (a) Gelidium (b) Nostoc (c) Chlamydromonas (d) Ulothrix Ans (a) b. Freshwater species. Cladophora 4. 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. Jump to navigation Jump to search. They are attached to a solid substratum by means of a colourless lowermost cell called holdfast. Algae are chief producers in the marine ecosystem. 3. Solve the below free NEET mock test for a better understanding of the various topics. C. Filamentous and unbranched. A gametophyte is essentially a spore that develops from mitosis rather. D formation of zoospores. Zoospores, spores, or isogametes are formed in the cells of the filament during reproduction. Practice important Questions. Ulothrix zonata and Hydrurus foetidus are the common attached filamentous algae. grow on barks called epiphloeophytes. Economic Importance of Fungi in Agriculture The yeasts, are the best source of vitamin B complex. Eg. The actual delimitation of a group of plants from their macroscopical features and naming as Algae was done by A. L. De Jussieu (1789). They are cylindrical and quadrate. NEET Biology is the vey important paper in the medical entrance exam. 1. A student observed an algae with chlorophyll a, b and phycoerythrin, it should belong to (a) Phaeophyta (b) Rhodophyta (c) Chlorophyta (d) Bacillariophyta. Bank for F.Y are formed in the laboratory of xylem & amp ; economic importance ; of... 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