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Which of the following is a free-living ...

Which of the following is a free-living nitrogen fixing bacterium present in the soil ?

A

Nitrosomonas

B

Rhizobium

C

Azotobacter

D

Pseudomonas

Text Solution

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The correct Answer is:
C
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PRADEEP-ECOSYSTEM-Multiple choice question
  1. In an aquatic ecosystem, the trophic level equivalent to cows in grass...

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  2. Desert, grassland, forests and tundra are the example of:

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  3. Which of the following is a free-living nitrogen fixing bacterium pres...

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  4. Which of the following fixes atmospheric N(2) ?

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  5. Pyramid of energy in a river ecosystem is:

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  6. Which one of the following types of organisms occupy more than one tro...

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  7. Chipko movement was launched for the protection of

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  8. The correct sequence of plants in a hydrosere is

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  9. Which one of the following is a symbiotic nitrogen fixer?

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  10. During the process of ecological succession the changes that take plac...

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  11. Climax community is in a state of

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  12. Among the following biogeochemical cycles, which one does not have los...

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  13. The sequence of communities of primary succession in water is

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  14. The reservoir for the gaseous type of bio-geo chemical cycle exists in...

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  15. If the carbon atoms fixed by producers already have passed through thr...

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  16. Which of the following type of ecosystem is expected in an area where ...

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  17. The zone at the edge of a lake or ocean which is alternatively exposed...

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  18. Edaphic factor refers to

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  19. Which of the following is an ecosystem service provided by a natural e...

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  20. The biomass available for consumption by the herbivores and the decomp...

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