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

One of the free-living, anaerobic nitrogenfixer is

A

Azotobacter

B

Beijernickia

C

Rhodospirillum

D

Rhizobium

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TRUEMAN BIOLOGY-MINERAL NUTRITION-MULTIPLE CHOICE QUESTIONS
  1. Which one of the following is not a micronutrient?

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  2. An element playing important role in nitrogen fixation is

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  3. One of the free-living, anaerobic nitrogenfixer is

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  4. Which one of the following is not an essential mineral element for pla...

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  5. An organism used as a biofertilizer for raising soyabean crop is

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  6. Nitrifying bacteria-

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  7. The function of leghaemoglobin in the root nodules of legumes is

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  8. Hydroponics is the method of

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  9. Which one of the following elements (micronutrients) in plants is not ...

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  10. Which one of the following is not an essential mineral element for pla...

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  11. Cuscuta is an example of a

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  12. For its action, nitrogenase requires

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  13. Which one of the following is wrong statement ?

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  14. A nitrogen fixing microbe associated with Azolla in rice fields is

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  15. Best defined function of Maganese in green plants is

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

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

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

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

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  20. In which of the following, all three are macronutrients?

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