Class 7 Geography Chapter 1 Environment
Answer the following questions.
(i) What is an ecosystem?
Answer: An ecosystem is a community in a given area where living organisms interact with each other and their immediate surroundings including non livings.
(ii) What do you mean by natural environment?
Answer: The environment which is created by nature comprises of land, water, air, plants and animals is known as natural environment.
(iii) Which are the major components of the environment?
Answer : The major components of the environment are:
Answer: An ecosystem is a community in a given area where living organisms interact with each other and their immediate surroundings including non livings.
(ii) What do you mean by natural environment?
Answer: The environment which is created by nature comprises of land, water, air, plants and animals is known as natural environment.
(iii) Which are the major components of the environment?
Answer : The major components of the environment are:
(i) Natural environment
(ii) Human environment
(iii) Human made environment
(ii) Human environment
(iii) Human made environment
(iv) Give four examples of human made environment.
Answer :Four examples of human made environment are:
Answer :Four examples of human made environment are:
(i) Vehicles
(ii) Buildings
(iii) Roads
(iv) Parks
(v) What is lithosphere?
Answer : Lithosphere is the solid crust or the hard top layer of the earth which is made up of rocks and minerals and covered by a thin layer of soil.
(vi) Which are the two major components of biotic environment?
Answer : Two major components of biotic environment are: (i) Plants
(ii) Animals
(vii) What is biosphere?
Answer : 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.
(a) Desert (b) Aquarium (c) Forest
Answer : (b) Aquarium
(ii) Buildings
(iii) Roads
(iv) Parks
(v) What is lithosphere?
Answer : Lithosphere is the solid crust or the hard top layer of the earth which is made up of rocks and minerals and covered by a thin layer of soil.
(vi) Which are the two major components of biotic environment?
Answer : Two major components of biotic environment are: (i) Plants
(ii) Animals
(vii) What is biosphere?
Answer : 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.
Tick the correct answer.
(i) Which is not a natural ecosystem?(a) Desert (b) Aquarium (c) Forest
Answer : (b) Aquarium
(ii) Which is not a component of human environment?
(a) Land (b) Religion (c) Community
(a) Land (b) Religion (c) Community
Answer :(a) Land
(iii) Which is a human made environment?
(a) Mountain (b) Sea (c) Road
Answer :(c) Road
(a) Mountain (b) Sea (c) Road
Answer :(c) Road
(iv) Which is a threat to environment?
(a) Growing plant (b) Growing population (c) Growing crops
Answer : (b) Growing population
Match the following.
(i) Biosphere (a) blanket of air which surrounds the earth
(a) Growing plant (b) Growing population (c) Growing crops
Answer : (b) Growing population
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
(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
(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
(iii) Hydrosphere (b) domain of water
(iv) Environment (d) our surroundings
Give reasons.
(i) Man modifies his environmentAnswer : Man modifies his environment because the are capable of modifying it according to their need and live comfortable life. Humans learn new ways to use and change environment and invented many things. Industrial revolution enabled large scale production. Transportation became faster. Information revolution made communication easier and speedy across the world.
(ii) Plants and animals depend on each other
Answer : Plants and animals depend on each other for their sustainability. Animals consume plants as they are the only producers and also takes oxygen from them. Plants are dependent on animals as they give out carbon dioxide which is important for photosynthesis. Also, dead remains of animals provide nutrients to the plants.
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