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

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

A

Clindrospermum

B

Nostoc

C

Rhodospirillum

D

both a and b

Text Solution

Verified by Experts

The correct Answer is:
D
Many free living blue-green algae or xyanobacteria perform nitrogen fixtion, e.g., Anabaena, Nostoc, Cylindrospermum, etc.
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NCERT FINGERTIPS-MINERAL NUTRITION-Mineral Nutrition
  1. is a free-living N(2)-fixing aerobic bacterium.

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

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

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

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

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  6. Select the mismatched pair.

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

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

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

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

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

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

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  13. What dows the given figure represent?

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

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

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  16. The cofactor of nitrate reductase is

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  17. Leghaemoglobin is produced in response to

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

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

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  20. Read the following statements and select the correct answer. (i). Rh...

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