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Lakhmir Singh Biology Class 10 Solutions Our Environment (Chapter 5)

Lakhmir Singh and Manjit Kaur Solutions for Class 10 Biology Chapter 5 deals with what happens when we add our waste to the environment. The main topics of the chapter include Ecosystem – What are its components and food chains and webs, how do our activities affect the environment, ozone layer, how the ozone layer is getting depleted, and managing the garbage we produce.

The chapter has 10 exercises with around 163 questions in total. All the questions are according to the latest NCERT pattern. The Lakhmir Singh solutions provided by the experts of Instasolv helps to give a clear perspective about the key ideas of the chapter and will help you excel in your Board Exams.

In case of any doubts in these questions, you will not have to rush anywhere else as we have provided you with the best answers. Our subject matter experts have done thorough research on the topics to create these answers for you. Read them once and solve all your queries quickly.

Important Topics for Lakhmir Singh and Manjit Kaur Solutions for Class 10 Biology Chapter 5 – Our Environment

The main topics and sub-topics of Lakhmir Singh Class 10 Biology Solutions Chapter 5 – Our Environment are provided below:

Mode of Nutrition in Animals and Plants

Generally, there are two modes of nutrition in animals and plants including Autotrophic and Heterotrophic.

Types of Components

There are two types of components available including abiotic components and biotic components.

  • Abiotic components: The chemical and physical components of the environment which are non-living in nature are called abiotic components like the soil, air, water, temperature, etc.
  • Biotic components: The chemical and physical components of the environment which are living in nature are called biotic components like plants, animals, microbes, and fungi.

Ecosystem

In a given area, where both biotic and abiotic components are existing together is known as the Ecosystem.

Trophic Levels

Trophic Levels refer to the different levels in a food web as per the flow of energy. The several trophic levels are listed below:

  • Producers (T1)
  • Primary consumers (herbivores-T2)
  • Secondary consumers (Primary carnivores -T2)
  • Tertiary consumers (Secondary carnivores -T3)
  • Quaternary consumers (Terrestrial carnivores – T4)
  • Decomposers

Law of Conservation of Energy

Energy can neither be generated nor be damaged; rather, it converts from one form to another. In biological systems, it gets distributed from one organism to another across trophic levels.

Energy Flow

Transmission of energy from one trophic level to another representing its direction and amount is called a flow of energy. It can be denoted by the pyramid of energy. For example, in any food chain, only 10% of the energy is transported from one trophic level to another.

What is the Food Chain?

A series of creatures that are dependent on the next as a source of food is termed as the food chain.

What is the Food Web?

Generally, a food web is made by interconnections of various food chains. It is a graphical representation of ‘who eats whom’ in an ecosystem.

Characteristics of Ecosystem

The characteristics of the ecosystem are listed below:

  • It includes the summary of trophic levels.
  • Their energy flow and pyramids.

What is the Environment?

The environment consists of all living and non-living things. Unlike the ecosystem, there need not be any essential interaction between them.

Air Pollution

Overview of pollutants, organic particles, or other hazardous materials into the earth’s atmosphere. Generally, it is characterized into two types:

  • Natural – dust storms, forest fire, and volcanic activity
  • Man-made – power plants, homes, oil refineries, industries, and  transportation

Ozone Layer Depletion

The ozone layer shields the earth from the sun’s ultraviolet radiation. CFCs produced into the atmosphere react chemically with ozone particles and are depleting the layer.

Garbage Management

Garbage management includes all the actions required to manage waste from its beginning to its final disposal. It makes sure environmental best practices are followed along with proper monitoring and regulation. Steps included in garbage management are collection, transport, treatment, recycling, and disposal.

Exercise-Wise Discussion of Lakhmir Singh Solutions Class 10 Biology Chapter 5

This chapter of Class 10 Biology has 10 exercises with around 163 questions in total which are entirely based on the latest exam pattern. The questions range from basic to advance level so that you can easily understand each and every topic of the chapter. Some exercises are divided as follows:

Exercise 1 (Page – 226)

The first exercise of the chapter has around 19 questions which are very short answer type questions. These questions are based on what happens when we add our waste to the environment.

Exercise 2 (Page – 226)

This exercise has around 25 questions which are completely related to the main topics of this chapter including Ecosystem – What are its components and food chains and webs, how do our activities affect the environment, ozone layer, depletion of the ozone layer, and managing the garbage we produce.

Exercise 3 (Page – 227)

This exercise set has a total of 12 questions in which you need to give a proper explanation of the situation mentioned. 

Exercise 4 (Page – 228)

This exercise set has a total of 28 questions in which you need to choose the right answer from the options given.

Exercise 5 (Page – 229)

This exercise set has a total of 8 questions in which there are questions based on high order thinking skills. If you face issues in solving the questions, you can refer to Lakhmir Singh Solutions for Chapter 5 by Instasolv.

Other exercises of the chapter contain more than 50 questions. For better results, practise all the solved questions mentioned in the book Lakhmir Singh to make sure that all your concepts related to Our Environment are clear. You can any time refer to the solutions that are provided for Lakhmir Singh Biology Class 10 Chapter 5 for a better understanding and to excel in CBSE Board exams.

Benefits of Lakhmir Singh and Manjit Kaur Solutions for Class 10 Biology for Chapter 5 – Our Environment

Chapter 5 – Our Environment can be accessed from the comfort of your home. This spontaneously increases your attention on the significant topics as there is no distraction of a crowded tuition class. 

At Instasolv, our subject matter experts know the need of understanding the theories of what happens when we add our waste to the environment and are readily available to feature and help you understand the concepts for excellent results during your examination. We also encourage you to develop a smarter way of learning with the well-crafted solutions provided by our experts.