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NCERT Solutions for Class 10 Science Chapter 15 - Our Environment

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Last updated date: 19th Mar 2024
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NCERT Solutions for Chapter 15 Science Class 10 - Free PDF

Class 10 Science Ch 15 Solutions for Our Environment will help students understand all the basic to complex concepts of environmental Science. With the help of Our Environment Class 10 PDF, you get answers to all the present questions at the back of your textbook. By the end of 2030, it is estimated that the world will be needing twice as many resources that we are using now and that our planet won't be able to provide us. Thus, learning about the environment becomes more critical in this century than it was ever before. Our environment chapter's PDF is created by a unique team of teachers with experience in environmental studies for a long time.


Class:

NCERT Solutions for Class 10

Subject:

Class 10 Science

Chapter Name:

Chapter 15 - Our Environment

Content-Type:

Text, Videos, Images and PDF Format

Academic Year:

2023-24

Medium:

English and Hindi

Available Materials:

  • Chapter Wise

  • Exercise Wise

Other Materials

  • Important Questions

  • Revision Notes



You will get the answers to your questions from experts, and each solution is precise and to the point. You can also download this PDF in your local storage, so you don't need to worry about internet connectivity to access the files and the answers.


You can also download NCERT Solutions for Class 10 Maths to help you to revise complete syllabus and score more marks in your examinations.

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NCERT Solutions for Class 10 Science Chapter 15 - Our Environment
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Access NCERT Solutions for Class 10 Biology Chapter 15- Our Environment

1. Why are some substances biodegradable and some non-biodegradable?

Ans: Substances that might be rotten and diminished to easier substances by microorganisms functioning on are known as biodegradable and people substances that can not be acted upon by microorganisms and aren't diminished into easier substances are units known as non-biodegradable substances. Examples of biodegradables - vegetable wastes, paper, cotton etc. On the opposite hand, materials that can not be rotten by the action of microorganisms/decomposers are non-biodegradable. For example- plastic, glass, polyethene etc.

2. Give any two ways in which biodegradable substances would affect the environment.

 Ans: Two ways within which perishable substances would have an effect on the atmosphere area unit -

  • Biodegradable waste is a substance that can be broken down easily and naturally by natural sources like water, oxygen, sun radiation, or microorganisms. 

  • Biodegradable waste produces a foul smell and that’s why they result in pollution.

3. Give any two ways in which non-biodegradable substances would affect the environment.

Ans: Non-biodegradable substances affect the environment in the following ways:

  • They contaminate soil and water resources as they can't be rotten by microorganisms.

  • These substances, if accidentally eaten by stray animals, will damage them and might even cause their death.

4. What are trophic levels? Give an example of a food chain and state the different trophic levels in it.

Ans: A trophic level is the steps in a food chain.

Consider the following scenario:

For example:

Grass - Trophic level I

Grasshopper - Trophic level II

Frog - Trophic level III

5. What is the role of decomposers in the ecosystem?

Ans: Decomposers eat decomposing and dead materials. They contribute to the clean-up of the environment.

6. What is ozone and how does it affect any ecosystem?

Ans:  Oxygen in the form of ozone is a type of oxygen. Ozone's molecular formula is 03. In the atmosphere, it can be found in higher concentrations. It blocks the sun's damaging ultraviolet radiation from reaching the earth. UV rays have been linked to skin cancer, cataracts, and the extinction of plant and animal life.

7. How can you help in reducing the problems of waste disposal? Give any two methods.

Ans: The following methods can be taken to alleviate the trash disposal issue:

a. Reduce, reuse, and recycle as much as possible.

b. Use smart waste disposal techniques such as separate trash cans for different types of waste.

8. Which of the following groups contain 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

 Ans: (c) and (d)

9. Which of the following constitute 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)

10. Which of the following are environmental-friendly practices?

(a) Carrying cloth-bags to put purchases in while shopping

(b) Switching off unnecessary lights and fans

(c) Walking to school instead of getting your mother to drop you on her scooter

(d) All of the above

Ans: (d)

11. What will happen if we kill all the organisms in one trophic level?

Ans: If we kill all the organisms in one trophic level, the transfer of energy to the next level will stop.

It'll lead to overpopulation at one level. This would disturb the food chain and cause the collapse of the ecosystem.

12. Will the impact of removing all the organisms in a trophic level be different for different trophic levels? Can the organisms of any trophic level be removed without causing any damage to the ecosystem?

Ans: Yes, the impact of removing all the organisms at a trophic level will be different for different trophic levels. For example, on removing producers; herbivores would not be able to survive or they would migrate and the ecosystem would collapse. If herbivores are removed, producers would grow unchecked and carnivores would not get food. If carnivores are removed, herbivores would increase to unsustainable levels and could destroy the producers. If decomposers are removed, the dead animals would pile up due to which the environment would become polluted. In addition to this, if dead animals will not decompose, the recycling of nutrients in the soil will be stopped and its fertility will be reduced. As a result, the green cover of the earth will be lost. Thus to maintain the balance of the ecosystem the presence of organisms is necessary at each trophic level.

13. What is biological magnification? Will the levels of this magnification be different at different levels of the ecosystem?

Ans: Biological magnification is that the increase in the concentration of harmful chemical substances like pesticides within the body of living organisms at every biological process level of an organic phenomenon is named biological magnification. Yes, levels of biomagnification would increase because the biological process level would increase and would be the very best for the uppermost biological process level. it might have an effect on their organic process like growth, replica, etc.

14. What are the problems caused by the non-biodegradable wastes that we generate?

Ans: Following are the problems caused by the non-biodegradable wastes that we generate: 

  • They do not disintegrate and get accumulated within the setting.

  • Harmful non-biodegradable chemicals enter the organic phenomenon and cause biological magnification.

  • They cause air, land, water and soil pollution.

  • If not treated, the native population of animals, birds, plants and humans is severely suffering from intense non-biodegradable wastes there in space.

15. If all the waste we generate is biodegradable, will this have no impact on the environment? 

Ans: If the quantity of perishable waste will increase, then this excess perishable waste will certainly have an impression on the surroundings. The surplus perishable waste is rotten by the action of decomposers then it releases harmful greenhouse gases. These gases can accumulate within the atmosphere, inflicting warming. Perishable waste is recycled simply by the decomposers like bacteria and fungi. It'll have solely this dangerous impact on our surroundings that several Of the gases discharged throughout the decomposition method might end in global warming.

16. Why is damage to the ozone layer a cause for concern? What steps are being taken to limit this damage?

Ans: The ozone layer is the protective layer of the earth from harmful rays. It plays a significant role in protecting all living and nonliving organisms. If a layer is broken no organism will survive. Following measures, the steps being taken to limit this harm. 

  • We must always minimize the employment of vehicles.

  • We must always not encourage the burning of fossil fuels.

  • It's currently necessary for all the producing firms to form CFC- free refrigerators throughout the globe.

NCERT Solutions for Class 10 Science Chapter 15 - Our Environment

Students who are looking for NCERT Solutions for Class 10 Science Chapter 15 - Our Environment PDF can opt for Upcoming Exams and also You can Find the Solutions of All the Science Chapters below.


Related Study Materials for CBSE Term II Class 10 Science Chapter 15 Our Environment 


NCERT Science Solutions Class 10 - Chapter wise PDF Download


NCERT Solutions For Class 10 Science Chapter 15

Topics Covered in This Chapter:

  1. Ecosystem

  2. Food chains and webs

  3. Managing the garbage that we produce


Points Covered in This Chapter

  • An ecosystem's numerous components are interrelated.

  • The sun's energy is made available to the rest of the environment by the producers.

  • As we progress from one trophic level to the next, we lose energy, which restricts the number of trophic levels in a food chain.

  • The environment is impacted by human activity.

  • The usage of chemicals like CFCs has put the ozone layer in jeopardy. Because the ozone layer protects the environment from the sun's UV rays, this might be harmful to the ecosystem.

  • We may create biodegradable or non-biodegradable garbage.

  • The way we dispose of the rubbish we create is doing havoc on the ecosystem.


Types of Questions: NCERT Class 10 Science Chapter 15 

The types of questions that students may expect from the Chapter 15 Our Environment in the CBSE Class 10 Science Term II exam are listed below.

  • Very short answer type questions

  • Multiple-choice questions

  • Short-answer type questions

  • Long-answer type questions


Class 10 Science Chapter 15 NCERT Solution is one of the chapters which students love as it is one the easiest chapters that you will be reading in your Class 10th Science textbook. When you have chemical formulas from Chemistry, theorems from physics, and difficult names from biology, this chapter gives your mind to take a foot off from the pedals of hard work. Most of the things that you get to learn from this chapter are already known to you in one way or the other. As a result, the student receives good marks in their exams whenever a question comes from this chapter, which is most of the time. 

Class 10 Science Chapter-wise Marks Weightage in CBSE Term I and Term II 2021-22

It is advisable for students to go through all the chapters covered in the syllabus for Class 10 Science Term I and Term II for exam preparation. Also, knowing the weightage of marks for each chapter will help them get an upper hand to chalk out their study plan and utilise their time efficiently while they revise the chapters. Hence, the chapter-wise marks weightage for Class 10 Science CBSE Term I and Term II is given in the below table for the reference of students.



Units

Term I

Term II

Chapter Names

Marks Weightage

Chapter Names

Marks Weightage

Unit I: Chemical Substances: Nature & Behaviour

  • Chemical Reactions and Equations

  • Acids, Bases, and Salts

  • Metals and Non-Metals

16

  • Carbon and Its Compounds

  • Periodic Classification of Elements

10

Unit II: World of Living

  • Life Processes

10

  • How do organisms reproduce?

  • Heredity and Evolution

13

Unit III: Natural Phenomena

  • Light: Reflection and Refraction

  • Human Eye and Colourful World

14

-

-

Unit IV: Effects of Current

-

-

  • Electricity

  • Magnetic Effects of Currents

12

Unit V: Natural Resources



  • Our Environment

05


Benefits of Learning About Our Environment in Class 10th

From small animals and insects to giant animals and even glaciers benefit from human's learning in the field of environmental education. Environmental Science helps students in the 10th standard achieve good marks as it has engaging lessons that are easy to understand. You don't need to keep many things in mind as you are learning about the various natural world working criteria.


With Environmental Science, teachers and parents try to aware kids about the importance of nature. A study suggests children who play outside are more physically active, have better nutrition value in their bodies, and are more creative. 


This is the only subject which helps promote student's health while at the same time teaching them how to keep the environment and its surroundings healthy. With the Environmental Science outdoor activities, students become more active, which reduces the common health issues that the modern-day child is suffering from. Some of these are obesity, blood sugar, kidney failure, etc. 


In addition to this, when you are studying Environmental Science, you get to know things you need to succeed in the future. You get to investigate and define the problems that are around you and find ways to solve them through the subject only. 


With Environmental Science, students can find how to create a better world with a greener environment safe for plants, animals and even humans. 


Key Features of NCERT Solutions for Class 10 Science Ch-15 Our Environment

  • Prepared by highly experienced teachers.

  • Precise answers that provide a comprehensive understanding of the chapter.

  • In accordance with the revised syllabus for the Class 10 Science CBSE Term II exam.

  • Available as a free downloadable PDF.

  • Accessible on the Vedantu mobile app as well as on its official website.

  • Easy to understand answers supported by an explanation.

  • Prepared as per the latest CBSE guidelines.

FAQs on NCERT Solutions for Class 10 Science Chapter 15 - Our Environment

1. What types of questions are there in the NCERT Solutions for Class 10 Science Chapter 15 Our Environment?

Ans: The types of questions that you will come across in the NCERT Solutions for Class 10 Science Chapter 15 are as follows.

  • Very short answer type questions

  • Short answer type questions

  • Long answer type questions

There are 3 multiple-choice questions and 1 very short answer type of question in the NCERT Solutions Class 10 Science Chapter 15. You can answer the very short answer type of questions in one sentence. There are about 7 short answer type of questions and 5 long answer type of questions in the NCERT Solutions for Class 10 Science Chapter 15 Our Environment. All the questions given in the exercise of the chapter are solved as per the CBSE Class 10 guidelines are solved in these NCERT Solutions.

2. Where can I get the best NCERT Solutions for Class 10 Science Chapter 15 Our Environment online?

Ans: You can get the best NCERT Solutions for Class 10 Science Chapter 15 Our Environment on Vedantu. It is a leading ed-tech and students from all across the country vouch for the readability and reliability of NCERT Solutions provided by Vedantu. The NCERT Solutions for Class 10 Science Chapter 15 Our Environment are in alignment with the latest CBSE Class 10 syllabus and answer format. So, you can download and refer to these NCERT Solutions for your exam preparation. These NCERT Solutions will guide you to write precise answers for all types of questions commonly asked in the examination.

3. Can I download the NCERT Solutions for Class 10 Science Chapter 15 Our Environment for free?

Ans: Yes, you can download the NCERT Solutions for Class 10 Science Chapter 15 Our Environment for absolutely free of cost. These NCERT Solutions are available in PDF format on Vedantu. You can download this PDF and refer to these solutions even when you are not connected to the internet.

4. What is meant by biological magnification? Give an example.

Ans: The gradual accumulation of toxic chemical compounds in the body of living organisms at various trophic levels of the food chain, is called biological magnification. As we go up a food chain, the concentration of these toxic substances will go on increasing, and the maximum concentration of these toxic substances can be observed at the highest trophic level. 


A very common example of biological magnification is the accumulation of insecticides or chemical fertilizers in organisms at various levels of food chains.

5. What is the environment according to the Class 10 Syllabus?

Ans: The environment is something that consists of various biotic and abiotic components, such as plants, animals, human beings, and other physical non-living components that coexist in an area together and interact with each other in order to maintain the balance of nature. The environment can also be defined in simpler terms as the immediate surrounding in which one lives. You will come across this topic in the NCERT Solutions for Class 10 Science Chapter 15 given on Vedantu.

6. What is Our Environment?

Ans: Our Environment is Chapter 15 of the Class 10 Science NCERT textbook. This chapter deals with our ecosystem, ecology and the various aspects related to our surroundings and its betterment. It is crucial to understand that the unnecessary use of natural resources will lead to severe problems in the future when our planet fails to provide us with any more resources. Vedantu’s NCERT Solutions for Class 10 Science Chapter 15 Our Environment PDF is created by a team of experts.

7. How can we protect our environment according to Class 10?

Ans: The environment is something that needs to be protected not just for nature’s benefit but for our own benefit as well. Exploiting the natural resources and the environment as a whole will cost future generations to come. So, everyone must try to save the environment by altering their transport choices, or reducing the number of chemicals and usage of effluents, planting more trees, making wise energy choices and not depleting the natural resources. 

8. Why are plastics and other man-made substances not broken down by the action of bacteria or other Saprophytes? How are these substances broken down?

Ans: Plastics and other man-made substances are non-biodegradable in nature and hence, they are not decomposed by microorganisms or decomposers like bacteria or other saprophytes present in the environment. These non-biodegradable wastes then accumulate in the environment, pollute land and water and result in a global problem. These plastics and man-made substances ultimately settle at the bottom of the oceans and are usually broken down over a long period of time by the action of sunlight, marine animals, and oxidation.

9. How is it advantageous to use Vedantu for Our Environment Chapter 15 Class 10 Science?

Ans: The Vedantu NCERT Solutions for Our Environment Chapter 15 Class 10 Science are beneficial for the students of Class 10, who are willing to gain knowledge as well as score good marks in their examination. These solutions are prepared by a group of experts who have worked hard in putting up a simpler version of the story, summarised it and also given the solutions to each question in a very precise manner. The PDF can be downloaded free of cost from the Vedantu website (vedantu.com) and the app.