Chapter 7: Man Impact on Ecosystem - Science Mcqs for Grade 8

1.

Algae grows on surface of water and hence the becomes barrier for plants in water by blocking

A. sunlight

B. heat

C. fresh water

D. temperature

Answer & Solution Discuss in Board

2.

Technology can be use to harness renewable sources of

A. energy

B. food

C. light

D. heat

Answer & Solution Discuss in Board

3.

Many animals have become endangered species due to

A. over hunting

B. over feeding

C. global warming

D. forestation

Answer & Solution Discuss in Board

4.

Animal which is hunted for its glands which is used to make perfumes is

A. deer

B. cat

C. antelope

D. duck

Answer & Solution Discuss in Board

5.

During decomposition of buried waste explosion can occur due to production of gas

A. oxygen

B. methane

C. carbon dioxide

D. nitrogen

Answer & Solution Discuss in Board

6.

The harmful substances which damage the environment are called

A. pollutants

B. compounds

C. gases

D. waste material

Answer & Solution Discuss in Board

7.

A cleared are from trees can require a time to grow again which is equal to

A. 1 year

B. 20 years

C. 50 years

D. 500 years

Answer & Solution Discuss in Board

8.

If ice on polar regions will melt away animals will lose their habitat like

A. polar bears

B. seal

C. both a and b

D. trout

Answer & Solution Discuss in Board

9.

If atmosphere is released with lots of pollutants it is

A. pollution

B. forestation

C. deforestation

D. habituation

Answer & Solution Discuss in Board

10.

Human beings is able to satisfy his needs by changing

A. temperature

B. environment

C. habitat

D. region

Answer & Solution Discuss in Board

Practice MCQ Questions and answers on Chapter 7: Man Impact on Ecosystem - Science Mcqs for Grade 8

1. Algae grows on surface of water and hence the becomes barrier for plants in water by blocking

Answer & Solution

2. Technology can be use to harness renewable sources of

Answer & Solution

3. Many animals have become endangered species due to

Answer & Solution

4. Animal which is hunted for its glands which is used to make perfumes is

Answer & Solution

5. During decomposition of buried waste explosion can occur due to production of gas

Answer & Solution

6. The harmful substances which damage the environment are called

Answer & Solution

7. A cleared are from trees can require a time to grow again which is equal to

Answer & Solution

8. If ice on polar regions will melt away animals will lose their habitat like

Answer & Solution

9. If atmosphere is released with lots of pollutants it is

Answer & Solution

10. Human beings is able to satisfy his needs by changing

Answer & Solution

Read More Section(Science Mcqs)

1.

Algae grows on surface of water and hence the becomes barrier for plants in water by blocking

2.

Technology can be use to harness renewable sources of

3.

Many animals have become endangered species due to

4.

Animal which is hunted for its glands which is used to make perfumes is

5.

During decomposition of buried waste explosion can occur due to production of gas

6.

The harmful substances which damage the environment are called

7.

A cleared are from trees can require a time to grow again which is equal to

8.

If ice on polar regions will melt away animals will lose their habitat like

9.

If atmosphere is released with lots of pollutants it is

10.

Human beings is able to satisfy his needs by changing