Punjab 12th Class Biology Chapter 25 Ecosystem MCQs Test Online

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Question 1 of 12

Biology

1. A thin layer of earth in which all living organisms exists is called:

1.Ecosystem

2.Habitat

3.Xerosere

4.Biosphere

Question 1 of 12

Question 2 of 12

2. A localized group of species belonging to the same species is called as (Any group of interbreeding organisms of same species that exist together in both time and space is called):

1.Community

2.Biosphere

3.Ecosystem

4.Population

Question 2 of 12

Question 3 of 12

3. The basic functional unit of ecosystem is:

1.Species

2.Population

3.Ecosystem

4.Community

Question 3 of 12

Question 4 of 12

4. The abiotic component of an ecosystem is:

1.Producer

2.Temperature

3.Decomposers

4.Consumer

Question 4 of 12

Question 5 of 12

5. Study of single population's relationship to environment is called:

1.Autecology

2.Ecology

3.Synecology

4.Gerontology

Question 5 of 12

Question 6 of 12

6. The whole of the world's land is called:

1.Lithosphere

2.Hygrosphere

3.Ecosphere

4.Biosphere

Question 6 of 12

Question 7 of 12

7. A group of inter-breeding individuals occurring together in a space and time is called:

1.Population

2.Community

3.Niche

4.Species

Question 7 of 12

Question 8 of 12

8. Populations of different species (plants and animals) living in the same habitat form a:

1.Biosphere

2.Microhabitat

3.Ecosystem

4.Community

Question 8 of 12

Question 9 of 12

9. The basic functional unit of ecology is:

1.Population

2.Community

3.Ecosystem

4.Niche

Question 9 of 12

Question 10 of 12

10. Study of relationship of different communities to environment is called:

1.Zoology

2.Autecology

3.Embryology

4.Synecology

Question 10 of 12

Question 11 of 12

11. Biome is a:

1.Climax community

2.Regional community

3.Complex community

4. Simple community

Question 11 of 12

Question 12 of 12

12. Lithosphere includes:

1.Gases

2.Water

3.Earth Soil

4.Air

Question 12 of 12

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