Solution of Chapter 1. Enviroment (Our Environment Book)

Exercise

1

What is an ecosystem?
1

What do you mean by natural environment?
1

Which are the major components of the environment?
1

Give four examples of human made environment.
1

What is lithosphere?
1

Which are the two major components of biotic environment?
1

What is biosphere?
2

Tick the correct Answer.

Which is not a natural ecosystem?


(a) Desert


(b) Aquarium


(c) Forest
2

Tick the correct Answer.

Which is not a component of human environment?


(a) Land


(b) Religion


(c) Community
2

Tick the correct Answer.

Which is a human made environment?


(a) Mountain


(b) Sea


(c) Road
2

Tick the correct Answer.

Which is a threat to environment?


(a) Growing plant


(b) Growing population


(c) Growing crops
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 land water and air interact




(f) relation between the organisms and their surroundings
4

Give reasons

Man modifies his environment
4

Give reasons

Plants and animals depend on each other
5

Imagine an ideal environment where you would love to live. Draw the picture of your ideal environment