Biology Ecosystem Online Quiz Test MCQs

An ecosystem is a community of living organisms in conjunction with the non-living components of their environment, interacting as a system. To to help you in checking your level of knowledge about this topic, given below is a free online quiz about Ecosystem.

Biology Ecosystem Online Quiz Test MCQs

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Biology

1. Primary succession that starts in a pond is called:

Xerosere

Sammosere

Hydrosere

Derosere

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Question 1 of 15

2. An organism that feed on dead organic matter other than bacteria or fungi is called:

Detritivore

Transformer

Petritivore

Top transformer

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Question 2 of 15

3. Absence of lichens indicates atmospheric pollution by:

CO

SO₂

CO₂

All above

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Question 3 of 15

4. Which is the best source of renewable energy?

Petroleum

Coal

Trees (Biomass)

Cattle

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Question 4 of 15

5. The transfer of energy from one trophic level to another is called as:

Food pyramid

Food chain

Food net

Food web

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Question 5 of 15

6. A pollutant which causes mental illness is:

Mercury

Lead

Tin

Helium

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Question 6 of 15

7. Extinction of a species in a food chain is compensated by:

Ecological pyramids

Food web

None of these

Food series

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Question 7 of 15

8. In the coming years, skin = related disorders will be more common due to:

Greenhouse effect

Global warming

Depletion of ozone layer

All above

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Question 8 of 15

9. An example of decomposer is:

Algae

All these

Fungi

Virus

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Question 9 of 15

10. Primary succession that starts on a dry soil or rock is called:

Derosere

Hydrosere

Lithosere

Xerosere

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Question 10 of 15

11. Major unit of ecology is:

Ecosystem

Population

Community

Biosphere

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Question 11 of 15

12. Actual place or location where an organism lives is called its:

Terrain

Niche

Habitat

Domain

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Question 12 of 15

13. Succession begins by a few hardy invaders called:

Openers

Successors

Pioneers

Leaders

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Question 13 of 15

14. Which animals show no inter relationship (i.e.,neutralism)?

Cow and snake

Lizard and cockroach

Sparrow and worm

Mosquito and lizard

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Question 14 of 15

15. Driving force of ecosystem is:

All of these

Solar energy

Water

Green plants

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Question 15 of 15

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