Measles, smallpox and polio are caused by viruses while cholera is caused by a bacterium. S Chand ICSE Maths Solutions for Class 10 Chapter 4 Linear Inequations in One Variables. The main aim of writing this series is to help the learners understand difficult scientific concepts in a simple manner in easy language. Not only do these Lakhmir Singh Class 8 Science Chapter 2 Micro Organisms Friends And Foe Solutions strengthen students’ foundation in the subject, but also provide them with the ability to tackle various types of questions easily. Answer: Answer: Name two leguminous plants which can fix nitrogen. Answer: (e) Fungi – (I) Penicillium (II) Aspergillus. Question 41. Name the instrument (or device) which is needed to see the micro-organisms. (i) Tuberculosis from Miranda House, Delhi and also obtained a B.Ed. (f) milk These acids are utilized by various organisms. Lakhmir Singh and Manjit Kaur Solutions for Class 10 Chemistry - Access free Lakhmir Singh and Manjit Kaur Solutions for Class 10 Chemistry on TopperLearning. Vaccine works as follows: Question 68 B. For Study plan details. The process of pasteurization for the preservation of milk is discovered by Louis Pasteur. B. yeast D. measles Student get their Lakhmir Singh Manjit Kaur Class 6 solution by easy step. Cholera, chickenpox and malaria are communicable disease while cancer is not a communicable disease. Visit official Website CISCE for detail information about ICSE Board Class-9. (c) What is the sex of mosquito P? D. increasing the fertility of soil Lakhmir Singh and Manjit Kaur Science solution: Force and Pressure Chapter 11. Question 15. Question 23. (b) Anthrax disease is caused by a bacterium. Streptomycin and erythromycin are two commonly known antibiotics which are made from fungi and bacteria. Name two food materials which are preserved by sun-drying method in our homes. AWARENESS SCIENCE FOR CLASS 8 Lakhmir Singh. (d) bacteria S Chand Class 8 Science Chapter 2 Micro Organisms Friends And Foe Solutions are free of cost for the students. A. virus Question 44 A. Question 38. Science is one of the most important subjects in Class 8 CBSE Board examination. When it bits a person suffering from malaria, it sucks the blood of that person which contains the malarial parasite microbes. AWARENESS SCIENCE FOR CLASS 8 Lakhmir Singh. Class 6/7/8. Science & Maths; Class 9. Answer: You can find the complete syllabus in the solutions developed by the Selfstudys. (a) Rust of wheat Acetobacter bacteria convert alcohol into acetic acid (or vinegar). When cooked food is kept in a cold place, then the food does not get spoiled easily. HIV causes AIDS disease. Which of the following disease is not caused by viruses? … Question 87. Viruses are too much smaller in comparison to other micro-organisms. The human diseases such as common cold and influenza are caused by viruses. They do not show most of the characteristics of the living organisms like respiration. A. sodium metabisulphate Question 3. 2 Comments. Name the microbe which causes malaria disease. Name any two human diseases caused by protozoa. Question 1. A. cholera Question 89. Distinguish between prokaryotic and eukaryotic cells. ISBN-13: 9789352530243. Fill in the following blanks with suitable words: (iii) Lactobacillus If not, how can they be seen? D. female anopheles mosquito Question 9. Answer: A. sodium bicarbonate Question 66 B. Answer: C. protozoa Alcohol can be converted into vinegar by the action of micro-organisms called: Lakhmir Singh and Manjit Kaur Science solution: … Chapter – 11. (a) The plant disease, Rust of wheat is caused by fungi. (c) microscope Answer: The S Chand Class 8 Science Chapter 2 Micro Organisms Friends And Foe Solutions are crafted by subject experts who have vast knowledge over the subject. C. Louis Pasteur Education Franchise × Contact Us. Class 8 Maths Chapter 2 Linear Equations in One Variable Exercise 2.1 Questions with Solutions to help you to revise complete Syllabus and Score More marks. There are five major groups of micro-organisms. Organisms … Yeast is used in the production of: Answer: Female Anopheles mosquito is a carrier of malarial parasite. (c) Micro-organisms can be seen with help of a………. (vi) f ; Home > School Books > Social Science > S. Chand’s Social Sciences for Class-8 S. Chand’s Social Sciences for Class-8 J C Aggarwal & N.K. Column A Protozoa Plasmodium causes malaria disease. Question 13. Answer: Senior Teacher of Science in reputed school of Directorate of Education, Delhi. Question 26. We should not let water collect anywhere in the neighborhood. Lakhmir Singh Solutions for CBSE Class 8, 9, 10 for the academic year 2020-21 are provided at BYJU’S. Social Science. Answer: Viruses are the smallest micro-organisms which reproduce only inside the living cells of other organisms. What is a vaccine? Why are children given vaccination ? Answer: (c) Female (v) d ; Answer: Question 72. (c) Yellow vein mosaic of bindi (Okra) Jams and jellies are preserved by using sugar. Mention any three ways of preventing diseases spread by mosquitoes. Which micro-organism converts sugar into alcohol during fermentation? Cholera and tuberculosis are examples of communicable diseases. Hey guys,, How's your studies going on? Question 42. Question 4. (a) (i) Female Aedes mosquito (ii) Dengue What is the name of micro-organisms which reproduce only inside the living cells of other organisms ? Lakhmir Singh Science Class 8 Solutions: Lakhmir Singh and Manjit Kaur Science Class 8 Solutions free pdf download are available here.S Chand Science Class 8 Solutions are series of books which conforms to the NCERT syllabus. Here are some reasons why it would be helpful: The Lakhmir Singh Class 8 Science Chapter 2 Micro Organisms Friends And Foe Solutions offers various advantages to students who are appearing for the examination. D. an alga Answer: They just reproduce. All mosquitoes breed in water . Question 92. The vaccine for smallpox was discovered by: Question 16. (a) Name (i) mosquito P, and (ii) disease Question B. virus To which category of micro-organisms do the following belong? Answer: Answer: (g)Producing antibiotics The mosquito P is a carrier of virus and spreads a disease Question Another mosquito R is the carrier of protozoan S and spreads s disease called T. S Chand ICSE Solutions for Class 10 Maths Banking Exercise 2: Ques No 1. Preservation by deep freezing means preservation of food material in the extreme cold. S. Chand's Science for Class - 8 book. Blue green algae fix the atmospheric nitrogen to enrich soil with nitrogen and hence, increase soil fertility. (b) Citrus canker A vaccine is a special kind of preparation which provides immunity against a particular disease. The process of converting atmospheric nitrogen into compounds of nitrogen is called nitrogen fixation. Question 33. Science for Tenth Class Part 1 (Hindi) Physics Book-10 Lakhmir Singh. The foundation of most subjects is set up in this class only. Amoeba – Protozoa ; Diseases athlete’s food and ring worm are caused by fungi. B. alcohol. What is the name of micro-organisms which reproduce only inside the living … (A) Lactobacillus bacteria Name the gas present in atmosphere which is mainly responsible for causing global warming. It increase the volume of dough. D. fungus How do micro-organisms help in cleaning the environment? Vaccination is the process of giving a vaccine orally or by injection which gives protection against a particular disease. Publisher: S.Chand & Company Pvt.Ltd. (b) Female Aedes mosquito acts as carrier of dengue virus. Food preservation: Processing of food to prevent their spoilage and to retain their nutritive value for period is called food preservation. When yeast is mixed in dough for making bread, the yeast reproduces rapidly and produces carbon dioxide during respiration. Develop your conceptual skills during revision with TopperLearning’s model solutions by expert educators. Science for Tenth class physics S chand book pdf download July 01, 2020. (vii) Hepatitis B What precautions must be taken while taking antibiotics? What should an object do to produce sound? Published: 2016. (a) female Anopheles mosquito carries the parasite of malaria. (b) Name (i) mosquito R (ii) protozoan S, and (iii) disease T. (b) Citrus canker (iii) b; Question 10. The communicable diseases can occur and spread in the following ways: Question 67 A. Name the scientist who discovered the-vaccine for smallpox. A person must finish the full course of antibiotics prescribed by the doctor. solution, icse-allied publishers How do houseflies carry disease-causing microbes-(or pathogens)? The human diseases amoebic dysentery and malaria are caused by protozoans. Can micro-organisms be seen with the naked eye? Question 79. B. fungus Maintain personal hygiene and good sanitary habits. How is food poisoning caused? Name two food materials which can be preserved by using sugar. Question 44 B. (iv) Polio Which of the following disease is not caused by bacteria? Chapter 2 Micro Organisms Friends And Foe is an essential subject in the branch of Science Solutions, especially for those students who wish to opt for medical science in Class 8. This pdf is available for student for free to download. Which of the following increases the fertility of soil Name some of the preservatives which are used in the preservation of fruits as jams arid jellies. Microscope is needed to see the micro-organisms. Later, he became a Professor at that college. Subject – Science. The parasite called Plasmodium causes a disease known as malaria. Question 2. Edward Jenner discovered the vaccine for smallpox in 1978. Malaria and dengue spread by mosquitoes. Bubbles of the gas fill the dough and increase its volume. Answer: Scoring better marks in the examinations is important for CBSE Class 8th students. Answer: (a) what type if disease is he suffering from? How does Air Get Polluted are some of the significant topics discussed in this chapter. Name two food materials which are preserved by using common salt. All updated in a single page. (vi) Typhoid Question 37. Question 35. (g) As a result of nitrogen cycle, the percentage of nitrogen in the atmosphere remains more or less……. State the causative micro-organisms and modes of transmission of the following human diseases : Its help you to complete your homework. Name any five methods of preserving food. from Delhi University. Some of micro-organisms are used recycling of materials in nature and increasing the fertility of soil. C. sodium benzoate Name the scientist who discovered ‘penicillin’. Answer: Answer: Question 19. Name any two (d) algae, and Lakhmir Singh’s Science Teacher’s Resource Kit For Class 6 – Lakhmir Singh’s Science is a series of books for Classes 1 to 8 which conforms to the NCERT syllabus. The malaria disease is caused by a: Lakhmir Singh Manjit Kaur Class 8 Science Solution. Yeast is used for commercial production of alcohol and wine. An antibiotic Penicillin was extracted from fungus (mould) by Alexander Fleming in 1929. Advertisement. Answer: These solutions will provide you with an edge over the others because our S Chand Science Chapter 12 Friction Solutions Class 8 are concise and to the point. Which of the following is not a communicable disease? Name two food materials which are usually preserved by deep freezing. Sodium benzoate and sodium meta bisulphite are common preservatives which are used in the preservation of fruits as jams and jellies. Question 2. Answer: (b) female Aedes mosquito? Science for Tenth Class Part 2 (Hindi) Chemistry Book-10 Lakhmir Singh. Name the micro-organisms present in the soil and in the root nodules of leguminous plants which can fix atmospheric nitrogen. The carrier of malaria causing protozoan is: Answer: The temperature and pressure during lightning convert atmospheric nitrogen into oxides of nitrogen. Name two fruits which are preserved: Today We are providing 9th Class Physics Best Reference Book By S Chand Pdf. About the book. (c) Baking of Bread Female Aedes mosquito carries dengue virus. You will find all the solutions in a detailed manner and without any mistake. Name any two human diseases caused by viruses. Subject – Science. Salt, oil and vinegar are some of the preservatives which are used in the preservation of fruits and vegetables as pickles. Answer: The two common insects which act as carriers of disease-causing micro-organisms (or disease-causing microbes) are housefly and mosquito. Answer: This makes the dough rise. When yeast is mixed in dough for making bread, the yeast reproduces rapidly and produces carbon dioxide during respiration. Streptomycin, tetracycline and erythromycin are some of the commonly known antibiotics which are made from fungi and bacteria. Contact. Question 70. Name the insect which carries dengue virus. The following diseases are caused by the micro-organisms: Question 65. (i) Bacteria The parasite called Plasmodium causes a disease known as: Cholera disease spreads through infected food or water. C. housefly Yeast is used in baking industry for making bread. S Chand Science Class 8 Solutions Chapter 13 Sound Lakhmir Singh Science Class 8 Chapter 13 Very Short Answer Type Questions Question 1. (b) Yellow vein Virus Insect mosaic of bhindi (Okra), a plant disease, is caused by virus. Answer: Answer: Our experts make the chapters interesting so that you enjoy your studying process and score well without stress. Name any two animal diseases and two plant diseases caused by micro-organisms. Cholera, typhoid and tuberculosis are caused by bacteria whereas measles is caused by a virus. B. Edward jenner Name any five human diseases caused by micro-organisms. What is their function? Answer: An object should vibrate in order to be table to […] Which of the following is not a use of micro-organisms? (b) by virus (b) nitrogen Question 77. * RD Sharma Solutions * RS Aggarwal Solutions * S.Chand Solutions Free App In which you can read All 8th class RD Sharma ,S.Chand & RS Aggarwal Solutions with proper diagram and accurate answers. Name some of the preservatives which are used in the preservation of fruits and vegetables as pickles. Lightning is a natural phenomenon which occurs in the sky and responsible for nitrogen fixation. Thus, a vaccine develops the immunity from a disease. Question 12. What is the mode of transmission of the following diseases? Name the insect which is the carrier of parasite of malaria. Some bacteria like rhizobium and blue green algae like Nostoc and Anabaena present in the soil are able to fix nitrogen gas from the atmosphere to enrich soil with nitrogen and increase its fertility. And the viruses do not have cells but live in the cells of living beings. (c) Yellow vein mosaic of bhindi (Okra) S Chand Class 8 Science Chapter 2 Micro Organisms Friends And Foe Solutions are prepared by SelfStudys experts in a comprehensive manner so that students can read the chapters in a detailed way. (vii) g, Question 93. Low temperature inhibits the growth of micro-organisms. A. bacterium Name any two human diseases caused by bacteria. (b) in the form of jams. Housefly is most common carrier of communicable diseases. When the housefly sits on garbage and animal excreta for feeding, then the millions of disease-causing micro-organisms present in them sticking to the body of housefly. HIV – Virus, Question 94. (a) Fixing nitrogen Question 22. Which of the two spreads dengue: mosquito or housefly ? This book really help the 9th Class Students in Science Examination. Leguminous plants can fix atmospheric nitrogen into nitrogen compounds. (c) Citrus canker is caused by bacteria. These solutions will provide you with an edge over the others because our S Chand Science Chapter 2 Micro Organisms Friends And Foe Solutions Class 8 are concise and to the point. Question 55 A. The questions given in S Chand Science Chapter 2 Micro Organisms Friends And Foe Solutions Class 8 are prepared in accordance with CBSE Latest Syllabus, thus holding higher probabilities of appearing on CBSE question papers. S Chand Class 8 Science Chapter 2 Micro Organisms Friends And Foe Solutions are prepared by SelfStudys experts in a comprehensive manner so that students can read the chapters in a detailed way. Food hygiene is essential for preventing food poisoning. I hope you are doing well ! (c) Protozoa – (I) Amoeba (II) Paramecium D. B and D (ii) Measles Question 52. A. a bacterium B. preparation of food by photosynthesis B. cancer Question 6. Of these, the bacterium Lactobacillus promotes the formation of curd. These solutions will provide you with an edge over the others because S Chand Biology Class 10 Solutions are concise and to the point. The micro-organisms which can reproduce and multiply only cells of other organisms are: Here we give Chapter 11 all solution of Class 8. Milk is turned into curd by bacteria. No. Mosquito repellant creams should be applied on the exposed parts of the body. Blue green algae are known as ‘biological nitrogen-fixer’ as they fix the atmospheric nitrogen. B. housefly Question 8. (a) The fruits which are preserved in the form of pickles by using oil and vinegar as preservative are raw mango and lemon. The micro-organism which is capable of converting sugar into alcohol and carbon dioxide is: The most common carrier of communicable diseases is: (d) What is the sex of mosquito r? What are the major groups of micro-organisms? C. tuberculosis Following is the table with the list of chapters that are covered in Lakhmir Singh Solution Class 8 Science: Lakhmir Singh Solutions Class 8 Science: Chapter 1 – Crop Production And Management. Preserved: ( a ) female Anopheles mosquito xi english as lecturer in Dayal Singh College the. Book pdf download July 01, 2020 the daughter of the disease-causing micro-organisms are antibiotics. Be prevented by vaccination, Delhi Organisms Friends and Foe Solutions can make your homework.! To retain their nutritive value for period is called food preservation provided at BYJU ’ s food and ring are... 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