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our environment

Total questions: 53

Worksheet time: 30mins

Name
Class
Date
1.
All energy on Earth ultimately comes from what source?
a)
Water
b)
Sun
c)
Consumers
d)
Oxygen
2.
What is the study of the interactions among organisms and  between organisms and their environments called?
a)
Biology
b)
Ecology
c)
Astronomy
d)
Biosphere
3.
When is Earth Day celebrated?
a)
Every day
b)
April 22nd
c)
April 20th
d)
June 5th
4.

When is World Environment Day is celebrated?

a)

5 February

b)

5 August

c)

5 June

d)

5 may

5.

The natural environment consists of................................... .

a)

Activities among human beings

b)

Plants and animals that surround the human beings

c)

Creations among human beings

d)

Interactions among human beings

6.

1. Land,water, air, etc, comprise the ...................environment.

a)

Natural

b)

Human

c)

Man-made

d)

Artificial

7.

1. What is an abiotic component of environment?

a)

Table

b)

Water

c)

Human

d)

None of these

8.

Natural environment can be divided into............................types.

a)

Two

b)

Three

c)

Five

d)

Four

9.

An artificial ecosystem is

a)

Pond

b)

Forest

c)

Desert

d)

Crop field

10.

Ozone layer protects us from harmful ultra-violet radiations of the sun.

a)

Ture

b)

false

11.

Environment is damaged by use of paper bag.

a)

True

b)

false

12.

The largest group of organisms found in a food chain would be:

a)
Primary Consumers
b)
Producers
c)
Decomposers
d)
Tertiary Consumers
13.

The phenomenon by which toxins concentrate in the organisms at higher trophic levels within an ecosystem is known as...

a)

Biotoxicity

b)

Biomagnification

c)

Eutrophication

d)

Predation

14.

What does the Ozone in the atmosphere do?

a)

causes the greenhouse effect

b)

causes acid rain

c)

protects the Earth from harmful infrared (IR) rays

d)

protects the Earth from harmful ultraviolet (UV) rays

15.

What damage can UV rays cause?

a)

can cause sunburn.

b)

can cause some types of skin cancer.

c)

cataracts.

d)

all of the above

16.

What is causing damage to the Ozone layer?

a)

Methane

b)

Carbon dioxide

c)

CFCs

d)

All of the above

17.

Identify the non- biodegradable substance from the following.

a)

Paper

b)

Tin cans

c)

Vegetable peels

d)

Wood

18.

Each step of a food chain is called as

a)

Trophic level

b)

Food web

c)

Eutrophication

d)

Biological magnification

19.

Which of the following constitute a food chain?

a)

Grass, tiger and ant

b)

Tiger, goat and human

c)

Goat, human and grass

d)

Human, fish and crab

20.

Calculate the amount of energy available to snake in the given food chain if there is 6500 J of energy available to grass hopper.

Grass ----> grass hopper ---> frog -----> snake

a)

6500 J

b)

650 J

c)

65 J

d)

6.5 J

21.

Why do we need to manage the garbage we produce

i)To improve the health and quality of life

ii)For preventing environmental pollution

iii) To produce more biodegradable plastics

iv) To reduce the strain on natural resources

a)

i and iv

b)

iii and ii

c)

i, ii and iii

d)

i,ii and iv

22.

Non biodegradable waste materials can be treated by composting technique.

a)

true

b)

False

23.

Non biodegradable wastes can be managed by practicing techniques like

a)

Reduce Reuse Reabsorb

b)

Reduce reuse recycle

24.

___________________ are found as an alternative for plastics which are decomposed by microbial action.

a)

PVC

b)

Biodegradable plastics

c)

thermoplastic plastic

d)

thermosetting plastic

25.

What percentage of energy is passed on to next tropic level?

a)

10%

b)

50%

c)

90%

d)

100%

26.

Which of the following is a primary consumer in a grassland ecosystem?

a)
b)
c)
d)
27.

What is this called?

a)

Food Web

b)

Food Chain

c)

Abiotic Factors

d)

Biotic factors

28.

Consider the following food chain:

Algae > Mayfly > Minnow > Trout


In a polluted ecosystem, which organism is likely to have the HIGHEST level of toxic chemicals in its body?

a)

Algae

b)

Mayfly

c)

Minnow

d)

Trout

29.
Why is there a limited amount of energy that can be passed on to the next feeding level?
a)
There is never enough sunlight available. 
b)
Some ecosystems have limited resources. 
c)
Organisms use some of the energy they get from eating.
d)
All the energy is available to be passed on. 
30.
The direction of the flow of energy in a food web is represented by ___.
a)
Light bulbs
b)
Dotted Lines
c)
Arrows
d)
Bubbles
31.
Energy increases as you move up the food pyramid (from bottom to top).
a)
True 
b)
False
32.

What does a food chain always start with?

a)

The herbivore

b)

The carnivore

c)

The producer

d)

The consumer

33.

Which organism recieves the least amount of energy from the producer?

a)

Owl

b)

Grasshopper

c)

Lilypad

d)

Mouse

34.

Which trophic level comprises of producers?

a)

First Trophic level

b)

Second Trophic level

c)

Third Trophic level

d)

Forth Trophic level

35.

What the source of energy for all food chains?

a)

Earth's core

b)

Tides

c)

Sun

d)

Soil

36.

Decomposers are important because (check all the correct answers)

a)

They break down organic matter into inorganic form and help recycle it

b)

They remove impurities from the soil

c)

They clean up the environment by decomposing dead organisms

d)

They make fossil fuels.

37.

Q. 1 Read the statement and answer the questions that follow: A non biodegradable toxic chemical has entered into the food chain consisting of 4 trophic levels.

(a)Which trophic level of a food chain is likely to be more affected by this incident.?

a)

First Trophic level

b)

Second Trophic level

c)

Third Trophic level

d)

Fourth Trophic level

38.

What phenomenon is responsible for the accumulation of non biodegradable material in the food chain?

a)

Biomagnification

b)

Bio-significance

c)

Biotechnology

d)

Biochemistry

39.

Would this phenomenon have occurred if the chemical that had entered the food chain was biodegradable?

a)

Yes

b)

No

40.

Pick the odd one out

a)

Pepsi Can

b)

Bisleri bottle

c)

Vegetable peels

d)

Thermacole plate

41.

Zoo, aquarium, garden are all types of _________________ ecosystem

a)

Natural

b)

Manmade

42.

How much energy is transferred from one trophic level to the next?

(a)  

43.

How much of the sun's energy can plants use of the total energy that falls on them?

(a)  

44.
Study of how living things interact with each other and with their nonliving environments
a)
Sustainability
b)
Ecology
c)
Environmental Science
d)
Renewable Resource
45.
What is the definition of Abiotic factors?
a)
Alive organisms or things
b)
Dead things or organisms
c)
panda
d)
insect
46.
Carbon is used by plants during which process?
a)
Respiration
b)
Transpiration
c)
Photosynthesis
d)
Transportation
47.
Food chains are interconnecting food webs.
a)
true
b)
false
48.

Tick the non biodegradable wastes

a)

metal

b)

plastic

c)

vegetable peel

d)

polythene bags

49.
___ is waste obtained from plants and animals.
a)
Biodegradable waste
b)
Non-biodegradable waste
50.

The formula of ozone is

a)

O2

b)

O4

c)

O

d)

O3

51.

Tick the herbivores

a)

goat

b)

tiger

c)

elephant

d)

giraffe

52.

How do you keep your environment clean?

4 lines
53.
A collection of organisms that belong to different populations but all live in the same area and interact with one another.
a)
Population
b)
Ecosystem
c)
Community
d)
Ecosphere

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