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During biological nitrogen fixation, ina...

During biological nitrogen fixation, inactivation of nitrogenase by oxygen poisoning is prevented by

A

(a) leghaemoglobin

B

(b) xanthophyll

C

(c) carotene

D

(d) cytochrome

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TRUEMEN BIOLOGY ENGLISH-MINERAL NUTRITION-MULTIPLE CHOICE QUESTIONS
  1. An organism used as a biofertilizer for raising soyabean crop is

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  2. Nitrifying bacteria

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

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  4. Hydroponics is the method of

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

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

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  7. Cuscuta is an example of a

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  8. For its action, nitrogenase requires

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  9. Which one of the following is wrong statement ?

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

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  11. Best defined function of Maganese in green plants is

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

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  13. Deficiency symptoms of nitrogen and potassium are visible first in (A...

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

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

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  16. In which of the following, all three are macronutrients? (A) Iron, cop...

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  17. Which is essential for the growth of root tip?

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  18. Select the mismatch

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  19. In which of the following forms is iron absorbed by plants?

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  20. Which of the following elements is responsible for maintaining turgor ...

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