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Leguminous plants are able to fix atmosp...

Leguminous plants are able to fix atmospheric nitrogen through the process of symbiotic nitrogen fixation. Which one of the following statements is not correct during this process of nitrogen fixation?

A

Nodules act as sites for nitrogen fixation

B

The enzyme nitrogenase catalyses the converison of atmospheric `N _(2)` to `NH_(3)`

C

Nitrogenase is insensitive to oxygen

D

Leghaemoglobin scavenges oxygen and is pinkish in colour

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The correct Answer is:
C
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MOTION-MINERAL NUTRITION -EXERCISE-3
  1. The common nitrogen-fixer in paddy fields is

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

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

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  4. A prokaryotic autotrophic nitrogen fixing symbiont is found in

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  5. Which one of the following elements in plants is not remobilised ?

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

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  7. Nitrifying bacteria

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

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

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  10. Which one of the following ions is essential for photolysis of water?

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  11. Best defined function of manganese in green plants is

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  12. Which one of the following is wrong statement?

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  13. For its action, nitrogenase requires

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

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

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  16. Minerals known to be required in large amounts for plant growth includ...

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

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  18. The oxygen evolved during photosynthesis comes from water molecules . ...

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  19. Which of the following is not a macro-nutrient Or Which is essenti...

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  20. Select the mismatch :

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