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Explain the role of Cyanobacteria as Bio...

Explain the role of Cyanobacteria as Biofertilizers.

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Cyanobacteria are autotrophic microbes which serve as an important biofertiliser in paddy fields.They add organic matter to the soil and also increase its fertility by addition of nitrogenous substances. Most of them can fix atmospheric nitrogen 2.g., Nostoc, Anabaena, etc.
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BETTER CHOICE PUBLICATION-MICROBES IN HUMAN WELFARE-SHORT ANSWER TYPE QUESTIONS
  1. How Green manures are used?

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  2. Explain the role of Cyanobacteria as Biofertilizers.

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  3. Give the role of micro-organisms in nature.

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  4. What are Fertilizers? What is meant by NPK-fertilizers?

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  5. Explain the biological control of weeds with the help of two examples.

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  6. Write four advantages of using biofertilisers in Agriculture.

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  7. What is Mycorrhiza? How does it act as a Bio-fertilizer.

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  8. What is biological significance of Azolla pinnata in agriculture?

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  9. Most living organisms cannot survive at temperature above 45°C. How ar...

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  10. Do you think microbes can also he used as source of energy? If yes. ho...

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  11. What is the ecological principle behind the biological control method ...

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  12. Explain the role of microbes in sewage treatment.

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  13. Why is cattle dung used to produce biogas ?

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  14. What are biofertilizers ? Give two examples.

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  15. Write a note on baculoviruses as biological control agent.

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  16. How does Baker's yeast help in production of bread?

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  17. How do the cyanobacteria serve as main source of biofertilizer?

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  18. What is Sewage? Differentiate between primary and secondary treatment ...

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  19. Explain the process of alcoholic fermentation.

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  20. Why are Biofertilizers preferred to Chemical fertilizers.

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