It frequently occurs in houses in regions that are chronically damp. Blastoconidia. Specimens should be collected in sterile containers or with sterile swabs and transported immediately to the laboratory. There are two basic modes of development of conidia: bias- tic and thallic. The synthesis of proteins on ribosomes that are different from those found in bacteria. Number of Questions Added: 03, #47-49. The slide is left to stand until clear, normally between five and fifteen minutes, in order to dissolve skin cells, hair, and debris. 6. Rhizopus stolonifer belongs to which class? Includes molds and blings such as blights such as Rhizopus stolonifer (bread mold). Includes mushrooms, toadstools, puffballs, bracket fungi, shelf fungi, stinkhorns, rusts, and smuts, 3. 2. Metabolism 4. 2. Structures of Fungi: Questions and Answers # 8. Leave overnight to eliminate insoluble dye. Content Guidelines 2. Coming in contact with the oogonium, the antheridium passes its nucleus inside the oogonium through fertilisation tube and forms oospore. Laboratory Diagnosis. Very rarely does fungal sepsis actually occur unless a patient is severely immune-compromised. i. Anteriorly uniflagellate, these are pyriform in shape having one whiplash (Synchytrium) or tinsel (Rhizidiomyces) type of flagellum anteriorly. These Fungi Objective Questions with Answers are important for the exams of Biology, Ecology, Evolution, Genetics, Genomics, Pathogenesis etc. Even the harvested potatoes rotted. Symbiotic association of a fungus living on plant roots. 5. Before sharing your knowledge on this site, please read the following pages: 1. Single conidium reaches full size before being cut off by septation and immediately another one develops underneath. This quiz is designed to assess your knowledge in ‘Virus Structure’. Organisms that possess a polysaccharide capsule exhibit a halo around the cell against the black background created by the India. 7. The slide is gently heated to speed up the action of the KOH. The sample is then cultured in a fungus-friendly environment for up to a week or more before the fungal colonies become visible. With the latter two categories, the immune status of the host is pivotal. 24. The conidia (Fig. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Choose the best answer from the four options given. 6. During the 1860s, great waves of Irish immigrants came to the United States. They are generally four in num­ber per basidium but may be two or many (e.g., Ustigo nuda tritici). First the farmers ate the animal feed and then the animals. To enhance clearing dimethyl sulfoxide can be added to the slide. Match the different types of spores listed under column I with the names of the organisms given under column II. For each question, choose the one best answer. Septum (septa-plural) is cross walls with pores to allow the movement of cytoplasm in hyphae. There are four types of sexual spores in fungi. 9. This website includes study notes, research papers, essays, articles and other allied information submitted by visitors like YOU. Stolon is horizontal hyphae that connect groups of hyphae to each other. Characteristics 5. Some unicellular fungi reproduce by mitosis. Grow on rocks, trees, buildings, etc. This set of Microbiology Multiple Choice Questions & Answers (MCQs) focuses on “Classification of Fungi”. Thus generally a chain of conidia are deve­loped, where younger one always remains near the mother, e.g., Tricho- derma, Fusarium. Definition of Fungi: The fungi are more evolutionarily advanced forms of microorganisms, as compared to ” the prokaryotes (prions, viruses, bacteria). Importance of Fungi, 2. 1. They are usually developed at the apex of hyphae. Many Americans are descended from those starving, demoralized farmers. 2. Farmers left the rotten potatoes in the fields, and the disease spread. The KOH prep cannot identify the specific organism; the specimen can be submitted for fungal culture to identify the organism. Plants absorb more water and minerals with aid of the fungus. 5. 7. Basically the asexual spores are of two types: sporangiospores, and conidia. B) 32 min. Fruiting bodies are modified hyphae that make asexual spores. Infections are difficult to treat and can be very serious – 30-40% of systemic infections result in death. The potato blight faded in 1848, but did not vanish. 'fungi questions multiple choice with answers biology april 29th, 2018 - fungi questions multiple choice with answers ques mycorrhiza is a relationship of roots of pinus and a fungus b alga c bacteria d ants' 'microorganisms test mr hill s science website 5 / 17. Characteristics of Fungi: Questions and Answers #  5. Fertilization occurs when (+) hyphae fuse with (-) hyphae to form a 2N or diploid zygote. Characteristics. Laterally biflagellate. These are pyriform in shape having two flagella (one whiplash and one tinsel type), placed anteriorly., e.g., Saprolegnia etc. The spores are mainly divided into two groups: The spores formed during asexual reproduction are the asexual spores. Important decomposers and recyclers of nutrients in the environment, 9. 12. amphotericin B. Three types of zoo­spores are produced in this group. Questions and Answers # 1. 2. Such are the historic, political, economic, and sociological effects of one species of fungus. iii. The basidia are developed from the dikaryotic cell. General Knowledge on Cell Membrane | Cell Biology CONCEPTS & THEORIES of Cell Wall QUESTIONS Cell Wall Multiple Choice Questions(MCQs) and Answers 1 Plant cell wall is made up of (a) Cellulose, hemicelluloses and pectin (b) Cellulose only (c) Cellulose, hemicelluloses and chitin (d) Cellulose and chitin Answer: Cellulose, hemicelluloses and pectin 2 Middle lamella… 3. Structures 6. Fungi reproduce asexually when environmental conditions are favorable. Stipe may have a skirt like ring below cap called the annulus. A fungal culture is taken from a part of the body in secretions or by taking a blood sample. Periodic acid-Schiff (PAS) and PAS Digest stain, 9. 4. Very rarely can fungi cause infections within the body because the human immune system is more than adapt at eliminating fungi. Yeasts are unicellular fungi which reproduce asexually by blastoconidia formation (budding) or fission. Reproduction of Fungi: 1. Sometimes, hyphae organized to form fruiting bodies. Eventually, about 900,000 survivors set off for Canada and the United States. and help form soil. Origin of Fungi: Ireland of the 1840s was an economically depressed country of eight million people. These induce immune hypersensitivity. Symbiotic association between a sac fungus and a photosynthetic green algae or cyanobacteria. 8. Multiple Choice. 5. Most fungi reproduce asexually by spores. 1. 8. 7. What are the general characters of bryophytes? Reproduction 7. The skin may be sore after the test because of the tissue being scraped off the top of the surface of the skin. Origin of Fungi 3. 4. Potassium Hydroxide (KOH) with Chlorazol Black, 8. They may develop either singly or in chains, e.g., Aureobasidium, Cladosporium etc. 5. (adsbygoogle = window.adsbygoogle || []).push({}); Question 1 : The wall of Rhizopus hypha is composed of, Question 2 : The mode of nutrition of Rhizopus, Yeast and Penicillium is, C) Unbranched, aseptate and multinucleate, Question 4 : The branches of conidiophores of Penicillium end in conidia bearing bottle shaped structures which are called, Question 5 : Thread like filaments which form the plant body of fungi are, Question 6 : Yeast like budding of Oidia in Mucor/Rhizopus is called, Question 7 : The common mode of reproduction in Rhizopus is byÂ, Question 8 : The gametes in Rhizopus develop in specially formed cells known asÂ, Question 9 : Thick walled asexual spored formed by Rhizopus, are, Question 10 : Root rot of Sweet Potato is caused by, Question 11 : Which of the following is a good example of heterothallism, Question 12 : The zygospore of Rhizopus contains much amount of fat globules. 1. Structures of Fungi. Grocott’s Methenamine Silver (GMS) stain. Structures 6. These are kidney-shaped having two flagella (one whiplash and one tinsel type), placed laterally, e.g., Phytophthora, Pythium etc. Share Your PDF File 7. Question 43 : Which of the following diseases is caused by a fungus, Question 44 : The feeding structure of the fungus is the, Question 48 : Loose smut of wheat is caused by, Question 49 : Mycorrhiza, a relationship in between fungi and roots of higher plants, is, Question 50 : Zygospore of Mucor/Rhizopus germinates to form. Penicillium mold produces spores called conidia without a protective sac on the top of a stalk called the conidiophore. 10. 2. Fungi can be stained by . Aspergillosis is the group of diseases caused by Aspergillus. 5. D Copper sulphate. Other fungal diseases of fruits, grains, and vegetables can be equally devastating. 4. D) Saprophyte but acquires a parasitic mode, Question 38 : In Mucor and Rhizopus there occurs a phenomenon known as heterothallism which means, A) Fusion of two gametes from two thalli of opposite strains, B) Fusion of two gametes from thalli of similar strains, C) Formation of a zygospore parthenogenetically. Fungi may have evolved from prokaryotes by endosymbiosis. This is usually the case in patients with AIDS or with diabetes. b)Cotton blue. Disclaimer Copyright, Share Your Knowledge The preparation should be brownish, not black. Labels: mcq on fungi, mcq on lichen, Multiple Choice Questions on Fungi Multiple Choice Questions on Lichens. Called sporangium fungi or common molds. Reproduce by sexual and asexual spores, 18. Kingdom Monera MCQ (Multiple Choice Questions and Answers) A) 30 min. 1. 3. 4.8A, B, C) differ from aplanospores because they are not enclosed by a separate sporangial wall. 10. Multiple Choice Questions on Kingdom Fungi 1. C) 29 min. Follow-up tests are usually unnecessary. Ans: A. Welcome to BiologyDiscussion! Definition of Fungi 2. This makes the plasma membrane sensitive to those antimicrobial agents which either block the synthesis of ergosterol or prevent its incorporation into the membrane or bind to it, e.g. Anteriorly biflagellate. The KOH test procedure may be performed by a physician, physician assistant, medical assistant, nurse, or medical laboratory technician. ... Fungi digest their food internally. Some are parasites causing Dutch elm disease and chestnut blight. Cryptococcus neoformans is the major human and animal pathogen. Basidia are usually of two types: Holobasidium i.e., aseptate basidium and Phragmobasidium. Answers: 1. a) chitin 2. b)Phycomycetes 3. d) ringworm 4. a) Ascomycetes 5. b) mushrooms 6. b)organic substance ... c) blue green alage 9. a) mycelium 10. a) symbiotic relationship. Explore answers and all related questions . Each filament in a mycelium is known as A) a zygosporangium. The winter of 1845-1846 was a disaster for Ireland. This makes the fungi immune to those antimicrobial agents that are directed against the bacterial ribosome, e.g., chloramphenicol. The synthesis of chitin, a polymer of N-acetyl glucosamine, and other compounds, for use in forming the cell wall. Aerial hyphae often produce asexual reproduction propagates termed conidia (synonymous with spores). Newer Post Older Post Home. Shop for Low Price Tag Questions Exercises Multiple Choice Pdf And Fungi Multiple Choice Questions And Answers Pdf . a) Saffranine. In this type, the conidia are developed on hypha either singly or in short or long, branched or unbranched chains and enlargement of the conidium initial takes place only after the initial has been delimited by septum, e.g., Erysiphe, Penicillium, Geotrichum, Oidium etc. Classification 8. Newer Post Older Post Home. 1. 5. Zygospores can endure harsh environments until conditions improve and new sporangium. What little corn was available was usually fed to the cows and pigs. Such exposure is a normal part of the human condition and generally poses no adverse health effects. Infection is usually due to inhaling contaminated air. Aspergillus spores are found nearly everywhere so we are routinely and almost constantly exposed to them. But in Ascomycotina and Basidiomycotina, the spores are commonly surrounded by sterile hyphae and are called ascocarps and basidiocarps respec­tively. The male organ is called antheridium while the female one is known as, Question 23 : The rusts are serious diseases of our economic plants. Questions and Answers # 7. Vegetative structures found below ground and include rhizoids (anchor and absorb nutrients), hyphae, and mycelia. Sexual spore produced by conjugation when (+) hyphae and (-) fuse is called zygospore. The sporangiospores of this type are devoid of flagella and are called aplanospores (Fig. During this process a long gap is generally maintained between plasmogamy and karyogamy. Our mission is to provide an online platform to help students to share notes in Biology. Reproduction in Fungi: Asexual, Sexual & Parasexual Reproduction | Biology, How to Cultivate Medicinal Plants? Frequently asked questions and answers on Fungi. Most infections with fungi are limited to the skin, oral mucosa, or the genitals. 9. Most plants have mycorrhizae on their roots. Asexual reproduction produces genetically identical organisms and is the most common method used. Kingdom Fungi MCQ (Multiple Choice Questions and Answers) A) Cellulose B) Chitin C) Pectin D) Hemicellulose Answer : B A) Parasitic B) Saprophytic C) Symbiotic D) Autotrophic Answer : B A) Unbranched, aseptate and uninucleate B) Branched, septate and uninucleate C) Unbranched, aseptate and multinucleate D) Unbranched, septate and coenocytic Answer : C A) Metulae B) Sterigmata C) … Nevertheless, Aspergillus can and does cause disease in three major ways: through the production of mycotoxins; through induction of allergenic responses; and through localized or systemic infections. Grow best in warm, moist environments preferring shade, 22. Q 33. 6. Importance 9. When spore lands on moist surface, new hyphae form. D) 59 min. How do you perceive the colour of an object? Mix and store at room temperature. Test bank Questions and Answers of Chapter 16: The Evolution of Plants and Fungi When these grains are eaten by humans or when they are fed to dairy cattle and they get into the milk supply, they affect humans. Cryptococcus neoformans, because of its large polysaccharide capsule, can be visualized by the India stain. For skin samples, a scalpel or edge of a glass slide is used to gently scrape skin scales from the infected area. Conidia show variability in both their form and development. 4.4) are the characteristic spore of the subdivision Mastigomycotina. 4. Laboratory Diagnosis of Fungal Infection: The KOH test for fungus is conducted on an outpatient basis and patients do not need to prepare in advance. 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