Close Menu
    Facebook X (Twitter) Instagram
    CBSE Learning
    • Home
    • NCERT Solutions
    • Class 12
      • Class 12 Physics
      • Class 12 Chemistry
      • Class 12 Maths
      • Class 12th Biology
      • Class 12 English
      • Class 12 Accountancy
      • Class 12 Economics
      • Class 12 Business Studies
      • Class 12 Political Science
      • Class 12 Sociology
      • Class 12 Psychology
    • Class 11
      • Class 11 Maths
      • Class 11 Physics
      • Class 11 Chemistry
      • Class 11 Biology
      • Class 11 Accountancy
      • Class 11 English
      • Class 11 Economics
      • Class 11 Business Studies
      • Class 11 Political Science
      • Class 11 Psychology
      • Class 11 Sociology
    • Class 10
      • Class 10 English
      • Class 10 Maths
      • Class 10 Science
      • Class 10 Social Science
    • Class 9
      • Class 9 Maths
      • Class 9 English
      • Class 9 Science
      • Class 9 Social Science
    • Class 8
      • Class 8 Maths
      • Class 8 Science
      • Class 8 English
      • Class 8 Social Science
    • Class 7
      • Class 7 Maths
      • Class 7 Science
      • Class 7 English
      • Class 7 Social Science
    • Class 6
      • Class 6 Maths
      • Class 6 Science
      • Class 6 English
      • Class 6 Social Science
    CBSE Learning
    Home » NCERT Solutions for Class 7 Social Science – Our Environment Chapter 1 – Environment
    class 7 Social Science

    NCERT Solutions for Class 7 Social Science – Our Environment Chapter 1 – Environment

    AdminBy Admin6 Mins Read
    Facebook Twitter Pinterest LinkedIn Tumblr Email
    Share
    Facebook Twitter LinkedIn Pinterest Email

    Exercise : Solutions of Questions on Page Number : 6


    Q1 : Answer the following questions.
    (i) What is an ecosystem?
    (ii) What do you mean by natural environment?
    (iii) Which are the major components of environment?
    (iv) Give four examples of human-made environment.
    (v) What is lithosphere?
    (vi) Which are the two major components of biotic environment?
    (vii) What is biosphere?

    Answer :
    (i)Plants, animals and human beings depend on their immediate surroundings. They are often interdependent on each other as well. These relations of dependence and interdependence together constitute an ecosystem.
    In other words, an ecosystem is the system formedas a result of the interactions of all living organisms with each other, and with the physical and chemical factors of the environment in which they live.

    (ii)The environment that consists of all objects created by nature is called natural environment. The natural environment comprises land, water, air, plants and animals.

    (iii)The major components of environment are natural environment (consists of all objects created by nature), human environment (consists of human beings) and human-made environment (consists of objects created by human beings).

    (iv)Parks, buildings, roads and industries are some examples of human-made environment.

    (v)Lithosphere (or the domain of land) is the solid crust or the hard top layer of the Earth. It is made up of rocks and minerals, and is covered by a thin layer of soil. It is an irregular surface with various landforms such as mountains, plateaus, plains and valleys.

    (vi)The two major components of biotic environment are plants and animals.

    (vii)Biosphere is the narrow zone of the Earth where land, water and air interact with each other to support life.


    Q2 : Tick the correct answer.
    (i) Which is not a natural ecosystem?
    (a) Desert                              (b) Aquarium                                (c) Forest
    (ii) Which is not a component of human environment?
    (a) Land                                 (b) Religion                                  (c) Community
    (iii) Which is a human-made environment?
    (a) Mountain                          (b) Sea                                         (c) Road
    (iv) Which is a threat to environment?
    (a) Growing plant                   (b) Growing population                  (c) Growing crops

    Answer :
    (i) Which is not a natural ecosystem?
    (a) Desert                              (b) Aquarium                               (c) Forest
    (ii) Which is not a component of human environment?
    (a) Land                                 (b) Religion                                  (c) Community
    (iii) Which is a human-made environment?
    (a) Mountain                          (b) Sea                                         (c) Road
    (iv) Which is a threat to environment?
    (a) Growing plant                   (b) Growing population               (c) Growing crops


    Q3 : 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 land, water and air
    interact

    –

    (f) Relation between the organisms and
    their surroundings

    Answer :

    (i) Biosphere (e) Narrow zone where land, water and
    air interact
    (ii) Atmosphere (a) Blanket of air which surrounds
    the Earth
    (iii) Hydrosphere (b) Domain of water
    (iv) Environment (d) Our surroundings

    Q4 : Give reasons.
    (i) Man modifies his environment
    (ii) Plants and animals depend on each other

    Answer :

    (i)All living organisms depend on their immediate surroundings or environment. Human beings interact with their environment and modify it according to their needs. The primitive humans lived a simple life, and fulfilled their needs from the nature around them (by hunting, eating fruits, living on trees and in caves, etc.). With the progress of time, as life grew more and more complex, humans learnt newer ways to use their surroundings (growing crops, raising animals, setting up permanent settlements, etc.), for satisfying their growing needs. The discovery of fire, the invention of the wheel, the emergence of the barter system, the development of trade and commerce, the invention of the engine, the industrial revolution and the advancements in transportation and communication are some of the milestones on the road of human growth. While travelling on this road to development, humans have constantly modified all the three components of environment – natural (polluting the air by burning fuels), human (forming political and religious units) and human-made (using telephones lines for internet connectivity).

    (ii)Not only are all plants, animals and human beings dependent on their environment, but they are also interdependent upon each other in several ways. For example, plants are eaten by animals as food. Through photosynthesis, plants produce oxygen, which is necessary for the survival of all living organisms. Forests are the natural habitats of wild animals, while the woods of trees are used by humans for various purposes like building houses, boats, furniture, etc.
    On the other hand, animals help plants reproduce by helping in the pollination of seeds. Nitrogen is essential for the survival of plants, and they are provided with this nitrogen by the bacteria that live in the soil and in the roots of some plants. Photosynthesis, which is the way by which plants make their food, depends upon factors like sunlight, water and carbon dioxide. The carbon dioxide is provided by humans and animals through respiration.


     

    Share. Facebook Twitter Pinterest LinkedIn Tumblr Email
    Previous ArticleNCERT Solution Class 6 Social Science -Civics -Chapter 9 – Urban Livelihoods
    Next Article NCERT Solutions for Class 7 Social Science – Our Environment Chapter 2 – Inside Our Earth
    Recent Posts
    • Birds Name in English
    NCERT Book Solutions
    • NCERT Solutions for Class 12 Maths
    • NCERT Solutions for Class 12 Physics
    • NCERT Solutions for Class 12 Chemistry
    • NCERT Solutions for Class 12 Accountancy
    • NCERT Solutions for Class 12 English
    • NCERT Solutions for Class 12 Economics
    • NCERT Solutions for Class 12 Business Studies
    • NCERT Solutions for Class 12 Political Science
    • NCERT Solutions for Class 12 Psychology
    • NCERT Solutions for Class 12 Sociology
    • NCERT Solutions for Class 12 Biology
    • NCERT Solution for Class 11 Physics
    • NCERT Solutions for Class 11 Chemistry
    • NCERT Solutions for Class 11 Maths
    • NCERT Solutions for Class 11 Biology
    • NCERT Solutions for Class 11 Accountancy
    • NCERT Solutions for Class 11 English
    • NCERT Solutions for Class 11 Business Studies
    • NCERT Solutions for Class 11 Economics
    • NCERT Solutions for Class 11 Political Science
    • NCERT Solutions for Class 11 Psychology
    • NCERT Solutions for Class 11 Sociology
    NCERT Solutions
    • NCERT Solutions for Class 10 Maths
    • NCERT Solutions for Class 10 Science
    • NCERT Solutions for Class 10 English
    • NCERT Solutions for Class 10 Social Science
    • NCERT Solutions for Class 9 Maths
    • NCERT Solutions for Class 9 Science
    • NCERT Solutions for Class 9 English
    • NCERT Solutions for Class 9 Social Science
    • NCERT Solutions for Class 8 Maths
    • NCERT Solutions for Class 8 Science
    • NCERT Solutions for Class 8 English
    • NCERT Solutions for Class 8 Sanskrit
    • NCERT Solutions for Class 8 Social Science
    • NCERT Solutions for Class 7 Maths
    • NCERT Solutions for Class 7 English
    • NCERT Solutions for Class 7 Social Science
    • NCERT Solutions for Class 7 Science
    Exams
    • Privacy Policy
    • NEET 2024
    • NCERT Solutions for Class 8 Sanskrit
    • Current Affairs
    Links
    Latest News
    Contact Us
    Privacy Policy
    Ask a Doubt
    © 2025 CBSE Learning

    Type above and press Enter to search. Press Esc to cancel.