Class 10 Science Chapter 16 Management of Natural Resources
Are you looking for Class 10 Science Chapter 16 Management of Natural Resources notes and question answers? If yes, you are in the right place. This chapter teaches students why natural resources are important and how they can be used wisely for a better future. It is one of the most important chapters for school exams, HSLC board exams, and competitive examinations.
In this chapter, you will learn about the conservation of natural resources, sustainable development, forest management, water conservation, wildlife protection, biodiversity, coal and petroleum conservation, and the importance of using resources responsibly. The chapter also explains how people, communities, and governments can work together to protect nature and maintain ecological balance.
The notes and question answers are written in easy and simple English, so every student can understand the concepts without difficulty. Each topic is explained in a clear and student-friendly way, making learning easier and helping students revise quickly before examinations.
Whether you are preparing for class tests, annual examinations, or the HSLC Board Examination, these notes and solutions will help you understand the chapter clearly, strengthen your concepts, and score higher marks in Science.
✨ What You Will Get:
- 📘 Easy Chapter Notes
- ❓ Complete Textbook Question Answers
- ⭐ Important Exam Questions
- 📝 Simple and Easy Explanations
- 📚 Quick Revision Notes
- 🎯 HSLC Board Exam Preparation
Start studying Class 10 Science Chapter 16, Management of Natural Resources, today and learn how the proper use of natural resources can help protect our environment and ensure a sustainable future.
Management of Natural Resources
Selected Questions &Answers
Q: Mention one problem associated with the construction of large dams. HSLC ’15
Ans: Large ecosystems are destroyed.
Q: What changes in habits can you adopt to become environment-friendly?
Ans: To become environment-friendly, the following habits can be developed—
(a) Plant at least one tree every year and take care of its growth.
(b) Switch off electric lights, fans, etc., when not in use.
(c) Avoid wastage of food.
(d) Avoid the use of plastic bags.
(e) Stop using items made from animal skins.
Q: Compare the traditional methods of water storage in hilly areas, plains, and plateau regions. HSLC ’20
Ans: In hilly areas, dams are built on rivers and water is supplied to other regions through pipes. In plains, water is stored in ponds, lakes, and rivers. In plateau regions, rainwater is stored in artificial lakes and reservoirs.
Q: How will you differentiate between short-term and long-term use of resources?
Ans: Resources used for short-term purposes may benefit the present generation but do not leave sufficient resources for future generations.
On the other hand, long-term use fulfills the needs of the present generation while also conserving resources for future generations.
Q: Why should resources be distributed equally? What forces are working against the equal distribution of our natural resources? HSLC ’18
Ans: Equal distribution ensures that both rich and poor benefit equally from resources.
Wealth and power act against equal distribution.
Q: Why should forests and wildlife be conserved?
Ans: Conservation of forests and wildlife helps in—
(a) maintaining biodiversity and ecological balance.
(b) Increasing rainfall and maintaining climatic stability.
(c) Providing food and shelter for humans and other organisms.
(d) Enriching soil with nutrients after decomposition.
(e) Supporting the economic and social development of a nation.
Q: What changes would you suggest in your school to protect environmental sustainability?
Ans: We can put forward the following suggestions in the school to protect environmental sustainability–
(a) Emphasize rainwater harvesting.
(b) Prevent wastage of water and electricity.
(c) Use solar energy.
(d) Plant trees in the school campus.
Q: As an individual, what management responsibilities would you take for the following resources? HSLC ’20
(a) Forests and wildlife
(b) Water resources
(c) Coal and petroleum
Ans:
(a) Forests and wildlife: (i) Focus on conserving biodiversity, (ii) Prevent illegal cutting of trees, (iii) Protect habitats of wildlife.
(b) Water resources: (i) Turn off taps when not in use, (ii) Use only the required amount of water, (iii) Create awareness among people about water conservation.
(c) Coal and petroleum: (i) Use CFLs instead of ordinary bulbs, (ii) Switch off unnecessary electrical appliances, (iii) Use alternative sources like solar and wind energy instead of coal and petroleum.
Q: Why should we manage resources? What is your opinion about forest conservation? HSLC ’19
Ans: We should manage resources properly because—(a) Proper management maintains ecological balance.
(b) Humans and other living beings depend on natural resources for survival.
(c) Conservation of natural resources helps preserve biodiversity.
(d) Proper management strengthens the economic foundation of a country.
Forests are the habitat of numerous plants and animals and are essential for maintaining biodiversity. Therefore, forests should not be destroyed but conserved. The following measures can be taken—
(a) Stop indiscriminate cutting of trees.
(b) Plant trees in unused and government lands.
(c) Stop shifting cultivation (slash-and-burn agriculture).
(d) Encourage people to plant more trees.
Q: What are fossil fuels? Mention the disadvantages caused by their combustion. HSLC ’17, ’20
Ans: Coal and petroleum are called fossil fuels. They are formed from the remains of dead organisms over thousands of years through natural processes.
The combustion of fossil fuels causes several disadvantages, such as—
(a) Fossil fuels are non-renewable resources; their excessive use depletes their reserves, affecting future generations.
(b) Burning fossil fuels increases the amount of carbon dioxide in the atmosphere, which can be harmful to living organisms.
(c) It can cause environmental imbalance and increase the temperature of the Earth’s atmosphere.
Q: Mention three major problems associated with the construction of large dams. HSLC ’19
Ans: Some major problems associated with the construction of large dams are—
(a) There is a possibility of the destruction of the natural ecological balance.
(b) Due to artificial dams, unequal distribution of water resources may occur, creating threats to forests.
(c) Local people may have to be displaced to other places, leading to a waste of time and money.
Q: Write the importance of reduce, recycle, and reuse in environmental protection. What changes in habits can you adopt to become environmentally friendly? HSLC ’19
Ans: Measures like reduce, recycle, and reuse are important for environmental protection—
(a) Reuse: Some materials should be reused instead of being discarded.
For example, old clothes can be used to make dolls, decorative items, and household crafts.
(b) Reduce: The use of materials harmful to the environment, such as plastic bags, glass items, bottles, and rubber products, should be reduced.
Alternatives like jute bags, cotton products, and earthen pots should be encouraged.
(c) Recycle: Materials that are no longer usable should be recycled and used as raw materials. For example, paper can be recycled and used as an alternative resource.
Multiple Choice Questions (MCQ)
Q: In the upper layer of the atmosphere, ozone prevents—
(a) Infrared rays
(b) Visible light
(c) Ultraviolet rays
(d) Both (a) and (c)
Ans: (c) Ultraviolet rays.
Q: The first trophic level of a food chain is—
(a) Heterotrophs
(b) Autotrophs
(c) Homo sapiens
(d) None of these
Ans: (b) Autotrophs.
Q: Which of the following is not biodegradable waste?
(a) Kitchen vegetable waste
(b) Old torn clothes
(c) Plastic bag
(d) Old newspaper
Ans: (c) Plastic bag.
Q: Which of the following is a decomposer?
(a) Bacteria
(b) Virus
(c) Algae
(d) None of these
Ans: (a) Bacteria.
Q: Which of the following is a biodegradable waste?
(a) Polythene bag
(b) Mango peel
(c) Torn leather bag
(d) Plastic bottle
Ans: (b) Mango peel.
Q: Green plants can produce their own food. Therefore, they are placed at the ………. level of the food chain.
(a) First level
(b) Second level
(c) Third level
(d) Fourth level
Ans: (a) First level.
Q: Which of the following contains only biodegradable substances?
(a) Grass, flowers, and leather
(b) Grass, wood, and plastic
(c) Fruit peels, food items, and sour juice
(d) Food items, wood, and grass
Ans: (a), (c), (d).
Q: The flow of energy is always—
(a) Unidirectional
(b) Bidirectional
(c) Cannot be said correctly
(d) None of the above
Ans: (a) Unidirectional.
Q: The cause of diversity in organisms is—
(a) Variation in the environment
(b) Variation in work
(c) Variation in size
(d) Variation in structure
Ans: (a) Variation in environment.
Q: Which organisms convert dead bodies into useful substances and mix them with the soil?
(a) Viruses
(b) Decomposers
(c) Producers
(d) Microorganisms
Ans: (b) Decomposers.
Q: Which of the following forms a food chain?
(a) Grass, wheat, and mango
(b) Grass, goat, and human
(c) Goat, cow, and elephant
(d) Grass, fish, and goat
Ans: (b) Grass, goat, and human.
