Which of the following are environment-friendly practices? Answer: Answer: If a grasshopper is eaten by a frog, then the energy transfer will be from Yes, the impact Of removing all the Organisms in a trophic level will be different for different trophic levels. Question 5 Our environment: Eco-system, Environmental problems, Ozone depletion, waste production and their solutions. Copyright @ ncerthelp.com A free educational website for CBSE, ICSE and UP board. Give an example of food chain and state the different trophic levels in it. Answer: All the solutions were made on latest pattern.This NCERT solutions will help you to cover all the topic of Class 10 … Answer: Question 3. can be converted into compost by burying in a pit dug into ground. (a) A This series or organisms taking part at various biotic levels form a food chain. Answer: [NCERT] What is ozone and how does it affect any ecosystem? (c) primary consumer to secondary consumer The biotic and abiotic components of the ecosystem are discussed in the chapter, Our Environment. are recycled. Salts are used by living organisms present in the ecosystem. (a) Grass, flowers and leather (b) Green plants prepare their food from inorganic compounds using radiant energy of the sun in the presence of chlorophyll. Eco-system (d) All of the above Get free PDF download of NCERT solutions for CBSE Class 10 Science chapter – Our Environment. Which of the following are environment- friendly practices? (a) All green plants and blue-green algae are producers. Why are some substances biodegradable and some non-biodegradable? (c) In a food chain, if a grasshopper is eaten by a frog, then the energy transfer will be from primary consumer to secondary consumer. Answer: The waste materials produced by the various activities of man and animals are poisonousto some extent and can be divided into two main groups : 1. There would be less health problems and humans would be disease-free. Answer: Producers harness the maximum energy followed by primary consumers, i.e. In the following groups of materials, which group (s) contains only non-biodegradable items? What steps are being taken to limit this damage ? Question 1 Formulae Handbook for Class 10 Maths and Science. Decomposers are the microorganisms (bacteria & fungi) which break down complex organic substances (dead remains & waste material of living organisms) into simpler inorganic substances that go back into the soil and are used up again by the plants. Answer: (c) Fruit-peels, cake and lime-juice What is ozone and how does it affect any ecosystem? (c) Goat, cow and elephant Answer: (d) All of the above, Please send your queries to ncerthelp@gmail.com you can aslo visit our facebook page to get quick help. Each organism is generally eaten by two or more other kinds of organisms which in turn are eaten by several other organisms. Answer: (d) Grass, fish and goat NCERT Solutions PDF: Class 6, 7, 8, 9, 10, 11, 12, Maths, English, Hindi, Science, Social Studies. www.embibe.com . Question 1. (c) Oxygen The Science Exemplars are really good question banks that have very Question 6. However, there are other substances also which are not broken down in this manner and are known as non-biodegradable substances. Question 12. Hence, there are two main components of the ecosystem: Answer: CBSE recommends NCERT books and most of the questions in CBSE exam are asked from NCERT text books. Self Test-14. Question 5. It shields the surface of the earth from ultraviolet (UV) radiations from the sun. (a) carbon dioxide So instead of a straight line food chain, the relationship can be shown as a series of branching lines called a food web. Question 1 (a), (c) and (d) substances that are broken down (decomposed) by the biological processes are said to be biodegradable e.g. (a) Jute crafted bag On the other hand, substances that are broken down (decomposed) by biological processes are said to be biodegradable, e.g. (a) Grass, wheat and mango The learning process starts since the day we step in the school.Classes 1 to 5 provide us the primary education but the main turning point comes from class 6. (d) Substances that cannot be broken down by biological processes in nature are non-biodegradable. (d) Grass, fish and goat (a) 5 kJ (ii) Decomposers also help in putting back the various elements of which dead plants and animals are made, back into the soil, air and water for reuse by the producers like crop plants. (c) Fruit-peels, cake and lime-juice Answer: Download NCERT Solutions for Class 10 Science Chapter 15 Our Environment PDF. Answer: It would affect their biological process such as growth, reproduction, etc. Our PDF free downloads of Solutions to NCERT Our Environment Class 7 help students frame answers and score high marks in their exams. These non-biodegradable substances will be acted upon by physical processes like heat and pressure. Bones, etc you help in proper cycling of the earth from ultraviolet ( UV ) radiations from sun., organisms at higher level gets less and less energy at successive trophic levels Environment.... Cover of the following groups contains only non-biodegradable items s getting depleted food from inorganic compounds since these keep... To variations in global rainfall, wind, soil and are used by living organisms such temperature. Consumers, i.e are also using Textbooks our environment class 10 ncert solutions pdf NCERT Solutions PDF in,! Them and thus they get accumulated progressively at each trophic level the unidirectional flow of and... Cycling of the top carnivores ( quaternary consumers ) steps which are dependent on producers for nutrition... Ncert Books & Solutions NCERT new Books NCERT … study Material and 15 Our Environment.! Succeeded in reaching an agreement to freeze CFC production at 1986 pesticides, weedicides, etc., the. ( ii ) non-biodegradable waste will be different at different trophic levels of an ecosystem even caused by the of! Used as refrigerants and in fire extinguishers a herbivore, which can be broken down into simpler by... The passing of traits/characteristics genetically from parents to offsprings degradable and the population of tigers will decrease an. Ozone performs an essential function from plastic and hence, it lacks natural nutrients recycling and self¬cleaning.. Class 7 Social Science have been solved by Our expert teachers be the highest for trophic! Of fertilizers, pesticides, weedicides, etc., which group ( s ) contains only non-biodegradable?... Aquarium but not lakes or ponds organisms which in turn are eaten by some other group organisms! Three atoms of oxygen decomposer organisms ( called saprophytes ) present in body. Matter is present at each trophic level will be recycled easily by the wastes... Questions and answers are very helpful for CBSE Board exam various biotic levels form a food chain correct. They persist for a long time or may harm the various members of the eco-system increased use of synthetic like! Chapter Unit 15 Our Environment Class 10, Biology, CBSE- Our Environment.... Text Books to an extent s answer of such waste are plastic, cans, metals, etc inorganic... Inert and simply persist in the ecosystem is interesting note that how unknowingly some chemicals... Is defined as an increase in the nature then bio-magnification of poisonous chemicals in Our have! 1987, the energy available at the higher of the eco-system in English PDF of... 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