Assam SCERT Class 7 Social Science Chapter 4 Our Environment Question Answer Solution
Assam Board Class 7 Social Science Chapter 4 Our Environment all Question’s easy Solution by expert teachers. Assam SCERT Class 7 Social Science (SST) Chapter 4 Our Environment Solution.
Board |
Assam SCERT |
Class |
7 |
Book |
Social Science (SST) |
Topic |
Question answer |
Exercises:
1.) Answer the following:
(a) What is environment?
Answer:
All the things such as wind, rain, rivers, animals, birds, houses, villages etc. surrounding us is called Environment. All the things which we see from naked and unnaked eyes forms environment.
(b) What are the different types of environment? Write with examples.
Answer:
We see there are 2 types of environment.
I) Natural environment:
In this all things present in nature. E.g. Hills, mountains, rivers etc.
ii) Man-made environment:
In this all things are Man-made. E.g. houses, bridges, Factories etc.
(c) What are the main components of environment?
Answer:
There are 2 main components of environment.
i) Abiotic components:
In this water, land and air are the abiotic components.
ii) Biotic components:
In this all living organisms, plants, bacteria, fungus are the biotic components.
(d) How is the man-made environment formed?
Answer:
Man fulfil its needs from collecting various resources from nature. Man do modification and changes in resources from nature. This change in condition of resources, forms man-made environment.
2.) Tick the correct answer
(a) Which is not an element of man-made environment?
(1) Soil
(2) Educational Institution
(3) Transport system
Answer:(1) Soil
(b)Which is not an element of natural environment?
(1) Mountain
(2) House
(3) River
Answer:(2) House
(c) Which of the following destroys the environment?
(1) Plants
(2) Industrial waste
(3) Increase in food grains
(4) Increase in population
(5) Dying of animals
Answer:(4) Increase in population
3.) Match the following-
Left Right
(a) Our Surrounding (i) Land
(b) Hydrosphere (ii) Air
(c) Lithosphere (iii) Environment
(d) Biosphere (iv) Water
(e) Atmosphere (v) Animal world.
Answer:
Left Right
(a) Our surrounding(iii) Environment
(b) Hydrosphere (iv) Water
(c) Lithosphere (i) Land
(d) Biosphere (v) Animal world.
(e) Atmosphere (ii) Air
4.) Write in about eighty words how elements of biotic component exist in the environment.
Answer:
We know biotic components are all living organisms, plants, bacteria, fungus. All these elements are depends on each other for their life survival. E.g. animals such as cow, goat feed on grass and animals like tiger and lion kills animals for their food. When plants and animals both die microorganism start decomposing them in this way biotic component exist in the environment.
5.) Write in about hundred words in what type of environment you would love to live.
Answer:
We all live in environment. There are various things we see in environment some are naturally made and some are man-made. To survive our life we do certain changes in our environment but we have to make balance of natural environment and man-made environment. The environment which is free from any type of pollution, fresh water and air, disease free environment, In this type of environment I would love to live.