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Which of the following is a free living ...

Which of the following is a free living aerobic non-photosynthetic nitrogen-fixer ?

A

Rhizobium

B

Azotobacter

C

Azospirillum

D

Nostoc

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The correct Answer is:
B
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AAKASH SERIES-MINERAL NUTRITION-Exercise - III
  1. The major protion of the dry weight of plants comprises of

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  2. Choose the correct match Bladderwort sundew, vensufly trap

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  3. The plants grown in magnesium deficient but urea sprayed soil would sh...

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  4. Passive absorption of minerals depend on

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  5. Enzyme involved in nitrogen fixation

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  6. In plants inulin and pectin are

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  7. Which aquatic fern performs nitrogen fixation ?

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  8. Zinc as a nutrient is used by the plants in the form of

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  9. Which of the following is a free living aerobic non-photosynthetic nit...

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  10. The core metal of chlorophyll is

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  11. Which of the following is not caused by deficiency of mineral nutritio...

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  12. Bidirectional translocation of minerals takes place in

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  13. Which one of the following is not an essential element for plants ?

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  14. Which one of the following is a micronutrient for plants ?

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  15. Mycorrhiza is a symbiotic relationship between roots of higher plants ...

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  16. Which of the following can fix atmospheric nitrogen ?

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  17. The association between blue-green algae and fungi occurs in

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  18. Amino acids are mostly synthesized from

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  19. Phosphorus and nitrogen ions generally get depleted in soil because th...

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  20. Minerals absorbed by roots move to the leaf through

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