NCERT Solutions for Class 7 Geography Chapter 1 Environment

NCERT Solutions for Class 7 Geography Chapter 1 Environment Social Science

Here you will get NCERT Solutions for Class 7 Geography Chapter 1 Environment will enable you to come up with methods and strategies that will aid in total focus. These free NCERT Solutions are prepared just for you according to the latest CBSE guidelines. So, you will be able to score excellent marks in this assessment. It will help you build on your knowledge, especially when you are brainstorming a solution.

Chapter 1 Environment NCERT Solutions for Class 7 Geography

1. Answer the following questions.

(i) What is an ecosystem?

Solution

All plants, animals and human beings depend on their immediate surroundings. They are also interdependent on each other. This relation between the living organisms as well as the relation between the organism and their surroundings form an ecosystem.

(ii) What do you mean by natural environment?

Solution

The environment which is created by nature comprises of land, water, air, plants and animals are known as natural environment.

(iii) Which are the major components of the environment?

Solution

The major components of the environment are: 

• Natural environment

• Human environment

• Human-made environment

(iv) Give four examples of human-made environment.

Solution

Four examples of human-made environment—  buildings, parks, bridges and roads.

(v) What is lithosphere? 

Solution

Lithosphere is the solid crust or the hard top layer of the earth. It is made up of rocks and minerals and covered by a thin layer of soil. It is an irregular surface with various land forms such as mountains, plateaus, plains, valleys, etc.

(vi) Which are the two major components of biotic environment?

Solution

Plants and animals are the two major components  of biotic environment.

(vii) What is biosphere? 

Solution

Biosphere is a narrow zone of the earth where land, water and air interact with each other to support life. It consists of plant and animal kingdom together.

2. Tick the correct answer. 

(i) Which is not a natural ecosystem?

(a) Desert

(b) Aquarium

(c) Forest

Solution (b) Aquarium

(ii) Which is not a component of human environment?

(a) Land

(b) Religion

(c) Community

Solution (a) Land

(iii) Which is a human made environment?

(a) Mountain

(b) Sea

(c) Road

Solution (c) Road

(iv) Which is a threat to environment? 

(a) Growing plant

(b) Growing population

(c) Growing crops

Solution (b) Growing population

3. Match the following:

(i) Biosphere	(a) blanket of air which surrounds the earth
(ii) Atmosphere	(b) domain of water
(iii) Hydrosphere	(c) gravitational force of the earth
(iv) Environment	(d) our surroundings
	(e) narrow zone where the land water and the air interacts
	(f) relation between the organisms and their surroundings

Solution

(i) Biosphere	(e) narrow zone where the land water and the air interacts
(ii) Atmosphere	(a) blanket of air which surrounds the earth
(iii) Hydrosphere	(b) domain of water
(iv) Environment	(d) our surroundings

4. Give reasons.

(i) Man modifies his environment.

Solution

Man modify their environment to meet their needs. They are capable of modifying it according to their needs. Humans adapt new ways to use and change an environment, and as a result, they invented many things. Industrial revolution facilitated large scale production of goods. Man adapts his environment to make his life more comfortable and natural.

(ii) Plants and animals depend on each other.

Solution

Plants and animals depend on each other for their sustainability. Animals consume plants for their living and also takes oxygen from them, so few carnivorous animals inturn eat other animals. Plants are dependent on animals as they give out carbon dioxide which is important for photosynthesis, and dead remains of animals provide nutrients to the plants.