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Which of the following is a symbiotic ni...

Which of the following is a symbiotic nitrogen fixer ?
1. Frankia
2. Azolla
3. Glomus
4. Azotobacter

A

Frankia

B

Azolla

C

Glomus

D

Azotobacter

Text Solution

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The correct Answer is:
2
Frankia is a nitrogen fixing bacterium associated with the root nodulegume plants. Azolla is a fern which shows symboitic association with blue green alga Anabaena. Azotobacter is a free living nitrogen fixing bacterium. Glomus is the most common fungal partner of mycorrhiza.
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TRUEMAN BIOLOGY-MICROBES IN HUMAN WELFARE -Multiple choice question
  1. Which one of the following pairs is wrongly matched?

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  2. Which of the following is not used as a biopesticide

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  3. Which of the following is a symbiotic nitrogen fixer ? 1. Frankia 2....

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  4. An example of endomycorrhiza is

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  5. Select the correct statement from the following

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  6. which one of the following is not used in organic farming

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  7. N2 fixing microbe associated with azolla in paddy field is -

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  8. In the sewage treatment, bacterial flocs are allowed to sediment in a ...

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  9. A prokaryotic autotrophic nitrogen fixing symbiont is found in

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  10. Which one of the following is not a biofertlizer

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  11. Secondary sewage treatment is mainly a

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  12. Which of the following is mainly produced by the activity of anaerobic...

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  13. Ethanol is commercially produced through a particular species of:-

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  14. which one of the following helps in asbsorption of phosphorus ...

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  15. Which one of the following is a wrong matching of a microbe and its in...

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  16. Cyclosporine-A: an immunosuppressive agent is produced by the fungus

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  17. A Bioactive molecule, Cyclosporin-A used as an immuno-suppressive agen...

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  18. Baker's yeast is

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  19. The majority of Baculo viruses are used as biological control agents b...

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  20. The large holes in 'Swiss cheese' are because of

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