's chand science class 8 solutions chapter 2

Cholera, typhoid and tuberculosis are caused by bacteria whereas measles is caused by a virus. Question 90. Name the fungus. Question 37. About the book. (a) The plant disease, Rust of wheat is caused by fungi. The houseflies feed on garbage, animal excreta and dead organic matter. The temperature and pressure during lightning convert atmospheric nitrogen into oxides of nitrogen. Answer: Answer: Hi students, Welcome to Amans Maths Blogs (AMB).In this post, you will get S Chand ICSE Maths Solutions for Class 10 Chapter 4 Linear Inequations in One Variable Exercise 4.This is the fourth chapter ‘Linear Inequations in One Variables‘ included in ICSE 2020 Class 10 Maths syllabus. B. protozoan About the Lakhmir Singh Class 8 Science Solutions Authors. Viruses are too much smaller in comparison to other micro-organisms. Next it is chilled very fast to prevent bacteria from growing. Question 66 B. (d) bacteria Answer: Yeast is used in baking industry for making bread. Question 54 A. These nitrogen compounds combine with rain water to form nitric and nitrous acid which mix with the soil. In agriculture, they are used to increase soil fertility by fixing nitrogen. Since the immune system of children is not strong and they are more likely to catch any disease very easily, so all the children should be vaccinated at the proper ages to provide them immunity from certain diseases. Answer: Mr. Rajiv Anand has opened a recurring deposit account of Rs. B. housefly Rhizobium bacterium is found in the soil. (d) What is the sex of mosquito r? You can find the complete syllabus in the solutions developed by the Selfstudys. B. smallpox Question 52. Name the micro-organism used in bread-making which makes the bread-dough rise. Answer: NCERT Solutions for Class 6, 7, 8, 9, 10, 11 and 12. C. growth of yeast cells Mosquito repellant creams should be applied on the exposed parts of the body. C. dragonfly Malaria and dengue spread by mosquitoes. Distinguish between prokaryotic and eukaryotic cells. and ………… for ages. Answer: Yeast is used in the production of: Name one disease which spreads through insect bites. Question 92. D. measles The human diseases amoebic dysentery and malaria are caused by protozoans. This antibiotic was made from the fungus called penicillium. 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The carrier of parasite of malaria is Female Anopheles mosquito. This antibiotic was made from the fungus called penicillium. Some of the advantages given here are as follows: Lakhmir Singh has vast experience teaching science subjects and has written many books and solutions on the three main branches of science such as Physics, Biology and chemistry. Pratibha Nath "Pratibha Nath is the daughter of the late Dr. K.C. D. female anopheles mosquito What is a vaccine? Lakhmir Singh Class 8 Science Chapter 2 Micro Organisms Friends And Foe Solutions give students an advantage with practical questions. Housefly is most common carrier of communicable diseases. Name the micro-organisms which can fix atmospheric nitrogen in the soil. Name the microbe which causes malaria disease. All the questions has been solved by experts and explained in detail. Answer: D. dengue Degree from Delhi University. Question 6. Question 44 A. A vaccine is a special kind of preparation which provides immunity against a particular disease. The solutions covered are easy to understand, and each step by step in the solution is described to match the students’ understanding. Science books written by S Chand are very popular and are followed by several schools due to its practical examples and cohesive content. Class 8 Science Lakhmir Singh Book Solution Short Questions, Long Questions, MCQ Questions Solution and discussing. (c) microscope Practice Questions. Answer: No. B. a protozoan Chapter 2 – Micro-Organisms: Friends And Foe. D. Kneading Question 53. Question 10. AWARENESS SCIENCE FOR CLASS 8 Lakhmir Singh. What is meant by ‘nitrogen fixation’ ? C. hydrochloric acid S Chand Science Class 8 Solutions Chapter 18 Pollution of Air and Water Lakhmir Singh Science Class 8 Chapter 18 Very Short Answer Type Questions. Which of the following disease is not caused by bacteria? And the working mechanism of the antibiotics is to break the cell wall and attack on the bacteria. Question 14. Answer: A. sugar B. alcohol There are various ways of preventing the occurrence and spreading of communicable diseases. S Chand Science Class 8 Solutions are series of books which conforms to the NCERT syllabus. These solutions help students in exams as well as their daily homework. Penicillin is an antibiotic made from Penicillium. The organisms which are too small to be seen by the naked eyes and can be seen only though a microscope are called micro-organisms or microbes. 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. An antibiotic Penicillin was extracted from fungus (mould) by Alexander Fleming in 1929. How does Air Get Polluted are some of the significant topics discussed in this chapter. 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. Jams and jellies are preserved by using sugar. Name two common insects which act as carriers of disease-causing micro-organisms (or disease-causing microbes). Louis Pasteur discovered fermentation in 1857. C. protozoa So, when all your chapters are crystal clear, scoring higher marks in the examination will become much easier. Binding: Paper Back. (b) Citrus canker What are antibiotics? The two ways in which in which nitrogen gas of the atmosphere can be ‘fixed’ in nature to get nitrogen compounds in the soil are: (i) Nitrogen fixation by lightning: Lightning also helps in fixing atmospheric nitrogen into the soil. Microbial diseases that can spread from an infected person to a healthy person through air, water, food or physical contact are called communicable diseases. State the beneficial effects (or usefulness) of micro-organisms in our lives. Which micro-organism is utilized in making curd from milk ? After consuming a dish of mutton, a person complained of nausea, vomiting, diarrhoea, and pain in the abdomen. Question 23. Question 89. Answer: Answer: C. protozoan Which of the following increases the fertility of soil (ii) Measles D. an alga The houseflies feed on garbage, animal excreta and dead organic matter. Which micro-organism converts sugar into alcohol during fermentation? How do viruses differ from other micro-organisms such as bacteria? (c) Yellow vein mosaic of bindi (Okra) – Virus, Question 95. Name one plant disease each caused: Question 62. These micro-organisms are commonly called biological nitrogen fixers. Answer: (c) Protozoa – (I) Amoeba (II) Paramecium Question 39. B. protozoan These nitrogen compounds combine with rainwater to form nitric and nitrous acid which mix with the soil. Answer: (i) e; 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. A student ’ s food and ring worm are caused by bacteria creams be!, events, etc here we give Chapter 11 diseases, including Cholera, tuberculosis, smallpox, and... C ) micro-organisms like bacteria and Blue green algae fix the atmospheric nitrogen into nitrogen compounds in the neighborhood from. From any future attack of disease germs the method of pasteurization for large. These substances are again used by other plants and animals bacterium, plant or.... Chapter-Wise is given below Solutions will provide you with an edge over the others because s Chand Class xii s... World 's largest community for readers spoilage and to retain their nutritive value for period is called nitrogen.... 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Question 1 provide you with an edge over the others because s Chand book descriptions of fires. Question 45 a of physics Class 11 b bag any two ways of preventing diseases spread by houseflies transmission the... Microorganisms such bacteria and fungi that grow on our food items sometimes produce toxic substances communicable diseases can occur spread... Each caused: Question 46 a a symbiotic relationship, vomiting, diarrhoea and.

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