Which is not a natural ecosystem?

1

(a)

Desert

(b)

Aquarium

(c)

Forest

Which of the following is human-made component of environment?

1

(a)

Water

(b)

Land

(c)

Building

(d)

Air

The term 'environment' is derived from which of the following language?

1

(a)

Greek

(b)

German

(c)

French

(d)

English

Abiotic component of environment is :

1

(a)

Table

(b)

Water

(c)

Human

(d)

None of these

Life bearing layer on the earth is

1

(a)

Lithosphere

(b)

Hydrosphere

(c)

Atmosphere

(d)

Biosphere

Environment is our............support System

1

(a)

basic life

The gravitational force of the Earth holds the...........around it.

1

(a)

atmosphere

Lithosphere is a source of ..............

1

(a)

mineral wealth

______________is a trade in which goods are exchanged without the use of money.

1

(a)

barter system

Lithosphere refers to the thin layer of air that surrounds the Earth.

1

(a) True

(b) False

There could not be an ecosystem of a small pond or lake

1

(a) True

(b) False

Information revolution enabled large scale production.

1

(a) True

(b) False

All plants, animals and human beings depend on their immediate surroundings.

1

(a) False

(b) True

Biosphere is an irregular surface with various landforms.

1

(a) True

(b) False

What is environment?

1

(a)

The place, people, things and nature that surrounds any living organism is called environment.

What are the components of natural environment?

1

(a)

Land, water, air, plants and animals are the components of natural environment.

Name different types of water bodies present in Biosphere.

1

(a)

Rivers, lakes, seas, oceans are different types of water bodies.

Differentiate between biotic and abiotic environment with examples.

1

(a)

The world of living organisms is called biotic. e.g. plants and animals. Whereas abiotic is the world of non-living elements. e.g. land

Define atmosphere

1

(a)

The atmosphere is the thin layer of air that surrounds the earth

Give few examples of ecosystem

1

(a)

Examples of ecosystem are rainforest, grassland, desert, mountains, pond, lake, river, ocean, etc.

What is an ecosystem?

3

(a)

What is lithosphere?

3

(a)

What is biosphere?

3

(a)

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

3

(a)

What are the reasons for the change in our environments?

3

(a)

How have human beings adapted to the environment to fulfil their needs?

5

(a)

How does ecosystem play an important role in the survival of human?

5

(a)