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Note for Environment Studies - ENV By Abhishek Kumar

  • Environment Studies - ENV
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www.Vidyarthiplus.com SELVAM COLLEGE OF TECHNOLOGY, NAMAKKAL – 03 Ph: 9942099122 DEPARTMENT OF MECHANICAL ENGG.| Environmental Science and Engineering (GE 2021)Year/semester III/V 2 Marks Question & Answers Unit – I ENVIRONMENT, ECOSYSTEMS AND BIODIVERSITY PART – A 1. What is Environment? Environment is defined as, “the sum of total of all the living and non-living things around us influencing one another.” 2. Define Environmental Science Environmental study is the study of the environment, its biotic (ie, biological) and abiotic (ie, non biological) components and their interrelationship. 3. Define Environmental Engineering. Environmental Engineering is the application of engineering principles to the protection and enhancement of the quality of the environment and to the enhancement and protection of public health and welfare. 4. What are all the types of environment? i) Natural Environment ii) Man-made Environment 5. What are the important components of environment? i) Abiotic or Non-living component ii) Biotic or Living component iii) Energy component 6. State the significance and scope of environmental education. Significance: i) Environmental studies inform the people about their effective role in protecting the environment by demanding changes in laws and enforcement systems. ii) Environmental studies have a direct relation to the quality of life we live. iii) Environmental studies develop a concern and respect for the environment. Scope: i) To get an awareness and sensitivity to the total environment and its related problems. ii) ii) To motivate the active participation in environmental protection and improvement. www.Vidyarthiplus.com

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www.Vidyarthiplus.com SELVAM COLLEGE OF TECHNOLOGY, NAMAKKAL – 03 Ph: 9942099122 DEPARTMENT OF MECHANICAL ENGG.| Environmental Science and Engineering (GE 2021)Year/semester III/V 7. State the need for public awareness for solving environmental problems. Environmental pollution cannot be removed by the laws alone. The proper implementation and especially public participation are the important aspects, which should be given importance and stress. The public participation is useful in law making process and controlling the pollution activities. Thus the public participation plays a major role in the effective environmental management. 8. Mention the various types of public participation. 1. 2. 3. 4. Pressure group. Watch dog. Advisory council. Enforcing the environmental laws. 9. What is Ecology? Ecology is the study of interactions among organisms or group of organisms with their environment. The environment consists of both biotic components (living organisms) and abiotic components (non-living organisms). 10. What is mean by ecosystem? A group of organisms interacting among themselves and with environment is known as ecosystem. Thus, an ecosystem is a community of different species interacting with one another and with their non-living environment exchanging energy and matter. 11. What are all the types of ecosystem? 1. Natural Ecosystem a. Terrestial b. Aquatic 1. Marine water 2. Fresh water i. Lotic ii. Lentic 2. Artificial Ecosystem 12. What are the components of ecosystem? An ecosystem has two major components 1. Biotic (living) components. 2. Abiotic (non-living) components. www.Vidyarthiplus.com

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www.Vidyarthiplus.com SELVAM COLLEGE OF TECHNOLOGY, NAMAKKAL – 03 Ph: 9942099122 DEPARTMENT OF MECHANICAL ENGG.| Environmental Science and Engineering (GE 2021)Year/semester III/V 13. How are biotic components grouped? The members of biotic components of an ecosystem are grouped into three groups based on how they get their food. 1. Producers. 2. Consumers. 3. Decomposers. 14. Write photosynthesis equation. hv 6CO2 + 12H2O C6H12O6 + 6O2 +6H2O Chlorophy II 15. Write the first law of thermodynamics. It states that, “energy can neither be created nor destroyed, but it can be converted from one form to another.” 16. Write the second law of thermodynamics. It states that, “whenever energy is transformed, there is a loss of energy through the release of heat.” 17. What is ecological succession? Mention their types. The progressive replacement of one community by another till the development of stable community in a particular area is called ecological succession. Types: 1. Primary succession i) Hydrosere ii) Xerosere 2. Secondary succession. 18. What is all the process of Ecological Succession? 1. Nudation 2. Invasion 3. Competition 4. Reaction 5. Stabilizations 19. What are food chains? The sequence of eating and being eaten in an ecosystem is known as food chain. www.Vidyarthiplus.com

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www.Vidyarthiplus.com SELVAM COLLEGE OF TECHNOLOGY, NAMAKKAL – 03 Ph: 9942099122 DEPARTMENT OF MECHANICAL ENGG.| Environmental Science and Engineering (GE 2021)Year/semester III/V 20. What are all the types of food chain? 1. Grazing food chain, 2. Detritus food chain. 21. What are tropical levels (or) feeding levels? The various steps through which food energy passes in an ecosystem is called as tropic levels. The tropic levels are arranged in the following way as T1 T2 T3 T4 T5 22. What is food web? The interlocking pattern of various food chains in an ecosystem is known as food web. 23. What is Ecological pyramids? Graphical representation of structure and function of tropic levels of an ecosystem, starting with producers at the bottom and each successive tropic levels forming the apex is known as an ecological pyramids. 24. Define the terms producers and consumers. i) Producers synthesize their food themselves through photosynthesis. ii) Consumers are organisms which cannot prepare their own food and depends directly or indirectly on the producers. 25. Name the four ecosystems. 1. Forest ecosystems. 2. Desert ecosystems. 2. Grassland ecosystems. 4. Pond ecosystems. 26. Explain the concept of an ecosystem. A group of organisms interacting among themselves and with environment is known as ecosystem. Thus, an ecosystem is a community of different species interacting with one another and with their non-living environment exchanging energy and matter. www.Vidyarthiplus.com

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