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Which of the following is a non-symbioti...

Which of the following is a non-symbiotic nitrogen fixing prokaryote?

A

Azotobacter

B

Clostridium

C

Beijerinckia

D

all of these

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The correct Answer is:
D
Non symbiotic nitrogen fixing bacteria e.g., Azotobacter, Beijernckia (both aerobatic) and Bacillus Klebsiella, Clostridium (all anaerobic) are saprotrophic bacteria that perform nitrogen fixation.
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NCERT FINGERTIPS-MINERAL NUTRITION-Mineral Nutrition
  1. A farmer adds Azotobacter culture to soil before sowing maize. Which m...

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  2. is a free-living N(2)-fixing aerobic bacterium.

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  3. Which of the following is a non-symbiotic nitrogen fixing prokaryote?

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  4. Which of the following is a free-living nitrogen fixing cyanobacteria?

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  5. Symbiotic bacteria are found in the root nodules of members family

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  6. The bacteriumbelonging to group actinomycetes, produces N(2)-fixing no...

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  7. Select the mismatched pair.

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  8. Certain non-leguminous plants also form nodules to fix N(2). Example o...

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  9. N(2)-fixing blue-green alga Anabaena which is extensively used in rice...

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  10. The nodules present in the leguminous plants appear pink in colour due...

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  11. During nodule formation in leguminous plants, an infection thread is p...

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  12. Refer to the given figure and select the correct option.

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  13. Study the given figures carefully showing the development of root nodu...

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  14. What dows the given figure represent?

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  15. During N(2) fixation, reduction of one molecule of nitrogen into 2 mol...

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  16. Which one is the correct equation of nitrogen fixation?

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  17. The cofactor of nitrate reductase is

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  18. Leghaemoglobin is produced in response to

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  19. Which of the following statements is incorrect about leghaemoglobin?

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  20. conditions are created by leghaemoglobin in the root nodule of a legum...

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