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In paddy fields, biological nitrogen fix...

In paddy fields, biological nitrogen fixation is chiefly brought about by

A

Cyanobacteria

B

Green algae

C

Mycorrhizae

D

Rhizobium

Text Solution

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The correct Answer is:
B
Green algae
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MODERN PUBLICATION-MICROBES IN HUMAN WELFARE-COMPETITION FILE OBJECTIVE TYPE QUESTIONS (A. MULTIPLE CHOICE QUESTIONS) (MCQs): (From AIPMT/NEET & Other Competitive Examinations)
  1. Which of the following plants are used as green manure in crop fields ...

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  2. A common biocontrol agent for the control of plant diseases is

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  3. In paddy fields, biological nitrogen fixation is chiefly brought about...

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  4. Cyclosporine A, which is used as an immunosuppressive, agent, is produ...

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  5. Food poisoning is caused by

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  6. The most abundant prokaryotes helpful to humans in making curd from mi...

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  7. Monascus purpureus is a yeast ued commercially in the production of

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  8. Which one of the following helps in absorption of phosphorus from soil...

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  9. Yeast is used in the production of

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

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  11. Which one of the following is an example of carrying out biological co...

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  12. Trichoderma is an example of which of the following group of Fungi?

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  13. To speed up the malting process in brewing industry the growth hormone...

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  14. Lactic acid bacteria (LAB) grow in milk and convert it to curd and als...

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  15. An alga which can be employed as food for human being is

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  16. What gases are produced in anaerobic sludge digestres

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  17. which of the following is included in biopesticide ?

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  18. In Bt cotton, the Bt toxin present in plant tissue as pro-toxin is con...

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  19. Microbial biocontrol agent for butterfly caterpillar is :

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  20. Antibiotic penicillin is produced from

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