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Free-living nitrogen-fixing aerobic bact...

Free-living nitrogen-fixing aerobic bacterium is

A

Clostridium

B

Rhizobium

C

Azotobacter

D

Frankie

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Verified by Experts

The correct Answer is:
C
Azotobacter is aerobic `N_2` - fixing soil bacterium , while Closteridium is an anaerobic `N_2` - fixing soil bacterium
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MODERN PUBLICATION-ECOSYSTEM -COMPETITION FILE (OBJECTIVE TYPE QUESTIONS)(A. MULTIPLE CHOICE QUESTIONS)
  1. Which type of the following has inverted pyramid of energy

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  2. Which of the following ecosystem has very little primary productivity?

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  3. Free-living nitrogen-fixing aerobic bacterium is

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  4. Identify the plant belonging to the reed-swamp stage in hydrosere succ...

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  5. The flow of energy along various trophic levels of an ecosystem is :

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  6. Decomposition of organic matter is brought about by:

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  7. An interaction between two individuals where one is benefitted while t...

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  8. The correct sequence of plants in a hydrosere is

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

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  10. Which of the following is a symbiotic nitrogen fixer ?

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  11. Which of the following rain forests is home to more than 10000 species...

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

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  13. Pyramid of energy in a ecosystem is :

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  14. Animals of colder climates generally have smaller limbs. This is calle...

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  15. The percentage of precipitation that can be stored in dame of India is...

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  16. The least porous soil among the following is a:

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  17. The final stable community in ecological succession is:

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  18. The greatest problem of water conservation is to reduce the amount of

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  19. An example of symbiotic bacterium is

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  20. In root nodules of lengumes, leg-haemoglobin is important because

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