Cbse Class 10 Science Chapter 13 Important Questions - Our Environment

Ace your CBSE Class 10 Board Exams with this guide on CBSE Class 10 Science Chapter 13 Important Questions - Our Environment. It covers crucial topics like ecosystems, environmental pollution, and sustainable development, ensuring a comprehensive understanding to help you perform well in your exams.

Cbse Class 10 Science Chapter 13 Important Questions - Our Environment

Here are 50 important questions on Cbse Class 10 Science Chapter 13 Important Questions - Our Environment

1. What are trophic levels, and can you provide an example of a food chain?
2. What is the role of decomposers in an ecosystem?
3. Why are some substances biodegradable while others are non-biodegradable?
4. How do biodegradable substances affect the environment?
5. What impact do non-biodegradable substances have on the environment?
6. What is ozone, and what role does it play in ecosystems?
7. How can individuals contribute to reducing waste disposal issues?
8. Which group contains only biodegradable items: (a) Grass, flowers, and leather; (b) Grass, wood, and plastic; (c) Fruit peels, cake, and lime juice; (d) Cake, wood, and grass?
9. Which of the following makes up a food chain: (a) Grass, Wheat, and Mango; (b) Grass, Goat, and Human; (c) Goat, Cow, and Elephant; (d) Grass, Fish, and Goat?
10. What are some environment-friendly practices individuals can adopt?
11. What happens if all organisms in one trophic level are killed?
12. Is the impact of removing organisms from a trophic level uniform across all levels?
13. What is biological magnification, and how does it vary across different ecosystem levels?
14. What problems arise from non-biodegradable waste generation?
15. If all waste generated is biodegradable, will it have no environmental impact?
16. Why is damage to the ozone layer concerning for human health and ecosystems?
17. What steps can be taken to limit damage to the ozone layer?
18. How do decomposers maintain energy flow in an ecosystem?
19. Can you explain the difference between herbivores and carnivores in a food chain context?
20. In what ways can composting biodegradable materials benefit soil fertility?
21. How do physical processes affect non-biodegradable substances in the environment?
22. What role do bacteria and fungi play in breaking down organic matter?
23. How does the presence of ozone protect living organisms from UV radiation?
24. Why is it important to recycle non-biodegradable materials?
25. What are some examples of harmful gaseous pollutants emitted by non-biodegradable substances?
26. How does biological magnification affect human health specifically?
27. Can you describe how an imbalance in an ecosystem might occur due to trophic level removal?
28. What measures can be taken at an individual level to reduce plastic waste?
29. How does the accumulation of biodegradable waste lead to pollution if not managed properly?
30. In what ways do non-biodegradable wastes pollute water sources?
31. How does ozone depletion contribute to global warming effects?
32. What are some common sources of CFC emissions that harm the ozone layer?
33. Why is it essential to understand the interdependence of different trophic levels in ecosystems?
34. How do decomposers contribute to nutrient cycling in ecosystems?
35. What factors determine whether a substance is classified as biodegradable or non-biodegradable?
36. Can you provide examples of how human activities disrupt natural food chains?
37. How does increased population of lower trophic level organisms affect ecosystem balance?
38. In what ways can education about environmental practices influence community behavior regarding waste management?
39. How do environmental policies impact recycling efforts for non-biodegradable materials?
40. What innovations exist for reducing CFC usage in industrial applications today?
41. How does urbanization contribute to increased non-biodegradable waste generation?
42. In what ways can local governments assist in managing biodegradable waste effectively?
43. What role does public awareness play in mitigating environmental pollution caused by waste disposal practices?
44. How can schools incorporate environmental education into their curriculum effectively?
45. What are some long-term consequences of failing to address ozone layer damage?
46. How do seasonal changes impact the decomposition rates of organic matter?
47. In what ways can individuals track their ecological footprint related to waste generation?
48. Can you discuss the significance of phytoplankton in relation to ozone layer health?
49. What strategies can be implemented to encourage composting at home?
50. How does climate change influence the dynamics of food chains and trophic levels?

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Feature Class 10 Blog:

Benefits of Choosing Science Stream Subjects After Grade 10

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Class 10 Our Environment Notes

This chapter focuses on natural resources, their sustainable use, and the environmental challenges caused by human activities. It also emphasizes the importance of preserving the ecosystem and finding solutions to environmental problems.

1. Our Environment

Ecosystem:

• An ecosystem is a system formed by the interaction of living organisms (biotic components) with their physical environment (abiotic components).

• Components of an Ecosystem:

1. Biotic Components: Plants, animals, and microorganisms.

2. Abiotic Components: Sunlight, air, water, soil, temperature, etc.

Types of Ecosystems:

1. Natural Ecosystems: Forests, rivers, oceans, etc.

2. Artificial Ecosystems: Gardens, aquariums, farms, etc.

Food Chain and Food Web:

• Food Chain: Sequence of organisms where each is eaten by the next.

Example: Grass → Grasshopper → Frog → Snake → Hawk.

• Food Web: Interconnected food chains in an ecosystem.

Energy Flow in Ecosystems:

• Energy flows in a unidirectional manner, from producers (plants) to various consumers and decomposers.

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2. Environmental Problems

1. Ozone Depletion:

• The ozone layer protects Earth from harmful UV rays.

• Cause: Release of chlorofluorocarbons (CFCs) from refrigerators, air conditioners, and aerosols.

• Effect: Increased UV radiation leading to skin cancer, cataracts, and harm to aquatic life.

• Solution:

• Use CFC-free appliances.

• International agreements like the Montreal Protocol to reduce CFC emissions.

2. Waste Production:

• Types of Waste:

1. Biodegradable Waste: Organic waste that decomposes naturally (e.g., food waste, paper).

2. Non-Biodegradable Waste: Waste that does not decompose easily (e.g., plastics, glass).

• Effects of Excessive Waste Production:

• Soil and water pollution.

• Harm to wildlife and ecosystems.

• Blockage of drainage systems causing floods.

• Solutions:

1. Reduce, Reuse, Recycle (3Rs).

2. Proper waste segregation at source.

3. Composting biodegradable waste.

4. Reducing plastic usage and promoting eco-friendly alternatives.

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3. Biodegradable and Non-Biodegradable Substances

Biodegradable Substances:

• Break down into simpler substances by natural processes.

• Examples: Vegetable peels, paper, cotton, animal dung.

Non-Biodegradable Substances:

• Do not decompose easily and remain in the environment for a long time.

• Examples: Plastics, metals, glass, synthetic fibers.

Impact of Non-Biodegradable Substances:

• Persistent pollution in soil and water.

• Harmful effects on animals and humans when ingested.

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4. Steps to Protect the Environment

1. Conserving Natural Resources:

• Use renewable resources (solar, wind energy).

• Avoid overuse of non-renewable resources like coal and petroleum.

2. Promoting Afforestation:

• Planting trees to maintain ecological balance.

3. Waste Management:

• Segregating waste into biodegradable and non-biodegradable categories.

• Promoting recycling and composting.

4. Reducing Pollution:

• Avoiding the use of plastics.

• Reducing industrial and vehicular emissions.

5. Spreading Awareness:

• Educating people about the importance of sustainability and conservation.

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Conclusion:

In Our Environment, students learn about ecosystems, environmental pollution, and sustainable development. These topics are essential for understanding the impact of human activities on the environment, which is crucial for CBSE Class 10 Board Exams.

By focusing on CBSE Class 10 Science Chapter 13 Important Questions - Our Environment and practicing with sample papers, students can solidify their understanding.

Consistent revision and detailed notes will ensure excellent preparation for the exams.

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Other Chapters:

Chapter 1 Chemical Reactions And Equations

Chapter 2 Acids, Bases, And Salts

Chapter 3 Metals And Non-Metals

Chapter 4 Carbon and its compounds

Chapter 5 Life Processes

Chapter 6 Control And Coordination

Chapter 7 How Do Organisms Reproduce?

Chapter 8 Heredity And Evolution

Chapter 9 Light – Reflection And Refraction

Chapter 10 The Human Eye And The Colourful World

Chapter 11 Electricity

Chapter 12 Magnetic Effects Of Electric Current

Chapter 13 Our Environment

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Also Refer:

Class 10 Science NCERT Book PDF

Class 10 Science Sample Papers

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