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One of the free-living, anaerobic nitrog...

One of the free-living, anaerobic nitrogen-fixer is
Or
which of the following is a photoautotrophic bacterium

A

Rhizobium

B

Azotobacter

C

Beijerinckia

D

Rhodospirillum

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The correct Answer is:
D
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CENGAGE BIOLOGY-MINERAL NUTRITION-ARCHIVES
  1. The chief water conducting elements of xylem in gymnosperms are

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  2. Which one of the following structures between two adjacent cells is an...

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  3. One of the free-living, anaerobic nitrogen-fixer is Or which of th...

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  4. The common nitrogen-fixer in paddy fields is

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  5. Nitrifying bacteria:-

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  6. Which one of the following elements (miconutrients) in plants is not r...

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  7. A prokaryotic autotrophic nitrogen fixing symbiont is found in

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  8. Companion cells are closely accociated with Or Transport of food...

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  9. Study the cycle shown in Fig. 12.7 and select the option which gives c...

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  10. Leguminous plants are able to fix atmospheric nitrogen through the pro...

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  11. The function of leghaemoglobin in the root nodules of legumes is:-

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  12. A nitrogen fixing microbe associated with the fern Azolla in rice fiel...

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  13. Best defined function of manganese in green plants is

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  14. Which one of the following is correctly matched?

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  15. Which one of the following is a wrong statement?

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  16. For its activity, carboxypeptidase requires

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  17. For its action, nitrogenase requires

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  18. The first stable product of fixation of atmospheric nitrogen in legumi...

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  19. Deficiency symptoms of nitrogen and potassium are visible first in

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  20. Which one gives the most valid and recent explanation for stomatal mov...

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