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NCERT Solutions for Class 7 Social Science Geography Chapter 1 - Environment

NCERT Solutions for Class 7 Geography Chapter 1 - Environment are provided here for free PDF download. Get here the best answers for easy and quick learning.

Jun 26, 2020 18:54 IST
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NCERT Solutions for Class 7 Geography Chapter 1 Environment
NCERT Solutions for Class 7 Geography Chapter 1 Environment

Check the NCERT Solutions for Class 7 Social Science Geography Chapter 1 - Environment to get the most accurate answers. These answers have been explained in a manner that you will easily understand all the concepts and prepare effectively for the exams. You will find here the NCERT solutions for the exercise questions given in the latest NCERT Book for Class 7 Geography which has been published exclusively for the current academic year. Students should read only the NCERT Solutions provided by Jagran Josh to get the latest study material.  You can read and download all the questions and answers in PDF format.

NCERT Solutions for Class 7 Social Science Geography Chapter 1 - Environment:

1. Answer the following questions.

(i) What is an ecosystem?

Answer: 

The system in which all living organisms interact with each other and with the physical and chemical factors of the environment in which they live, is called an ecosystem.

(ii) What do you mean by natural environment?

Answer: 

The environment that comprises of all objects created by nature is called natural environment. It includes land, air, water, plants and animals.

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

Answer: 

The major components of the environment are:

  • Natural environment (consists of all objects created by nature)
  • Human environment (consists of human population)
  • Human-made environment (consists of objects created by human beings).

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

Answer: 

Four examples of the human-made environment are buildings, parks, industries and roads.

(v) What is lithosphere?

Answer: 

The solid crust or the hard top layer of the earth is called the lithosphere. 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 like mountains, plateaus, plains, valleys, etc.

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

Answer: 

Two major components of the biotic environment are plants and animals.

(vii) What is biosphere?

Answer: 

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

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2. 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

Answer: (a) Land

(iii) Which is a human made environment?

(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

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

Answer:

(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

(ii) Plants and animals depend on each other

Answer: 

(i) Man modifies his environment to fulfill his needs and make his life comfortable. For example, he builds houses to live and escape cold weather, hot weather and rains. He builds industries to produce goods that are necessary for a comfortable life. He builds roads to shorten the distances. He modifies his environment to adapt to the natural surroundings. However, all through this modification, humans are abruptly disturbing the ecological system and animal habitats.

(ii) Plants and animals depend on each other for their sustainability. For example, plants are the producers and animals are the consumers. Plants The plants also produce oxygen through the process of photosynthesis which is inhaled by humans and animals. On the other hand, humans and animals give out carbon dioxide gas through their respiration which is used by the plants in producing their own food.

Download all the NCERT Solutions for Class 7 Geography Chapter 1 from the following link:

NCERT Solutions for Class 7 Geography Chapter 1 - Environment

 

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