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

Which of the following is free-living aerobic non-photosynthetic nitrogen fixing bacterium

A

Rhizonbium

B

Azotobacter

C

Nostoc

D

Azospirillum

Text Solution

Verified by Experts

The correct Answer is:
b
Azotobacter (aerobic) is afree living `N_(2)`, fixing bacteria. This bacteria fix independently atmospheric nitrogen in their body and convert to organic nitrogen compounds. When they die, the organic nitrogen compounds of their body are made avaliable to higher plants through the activities of other bacteria.
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ERRORLESS -MONERA-Monera
  1. Consider the following four statement (1-4) and select the option whic...

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  2. A free living anaerobic bacterium capable of N(2) fixation in soil is

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  3. Which of the following is free-living aerobic non-photosynthetic nitro...

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  4. Which of the following groups of plants are highly useful in increasin...

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  5. A prokaryotic autotrophic nitrogen fixing symbiont found in or Bes...

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  6. Curing of tea leaves is brought about by the activity of

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  7. Oxygenic photosynthesis occurs in

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  8. Thermococcus, Methanococcus and Methanobacterium exemplify:

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  9. The symbiotic nitrogen fixing bacteria present in root nodules of legu...

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  10. Nitrogen fixing bacteria are associated with

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  11. Which of the following is recently discovered gram positive non-legumi...

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  12. Nitrifying bacteria , Nitrosomonas and Nitrobactor

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  13. Match the items in column I with those in column II and choose the cor...

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  14. The most abundant prokaryotes helpful to humans in making curd from mi...

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  15. During biological nitrogen fixation, inactivation of nitrogenase by ox...

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  16. Free living bacteria that can fix N(2) from soil is

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  17. For retting of jute the fermenting microbe used is

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  18. Which bacteria is responsible for the reduction of nitrates into nitro...

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  19. Which of the bacterium is useful in preparing Idli

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  20. Which of the following is symbiotic nitrogen fixes ltbr. Or Which of...

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