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Azolla is used as biofertilizer because ...

Azolla is used as biofertilizer because it.
(A) multiplies very fast to produce massive biomass
(B) has association of nitrogen fixing rhizobium
(C) has association of nitrogen - fixing cyanobacteria.
(D) has association of mycorrhiza.

A

multiplies very fast to produce massive biomass

B

has association of nitrogen fixing rhizobium

C

has association of nitrogen - fixing cyano bacteria.

D

has association of mycorrhiza.

Text Solution

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The correct Answer is:
C
has association of nitrogen - fixing cyano bacteria.
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KUMAR PRAKASHAN-MICROBES IN HUMAN WELFARE -SECTION - F MULTIPLE CHOICE QUESTIONS(MCQS ASKED IN COMPETITIVE EXAM)
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  2. Which of the following is a main component of biogas ?

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  3. Azolla is used as biofertilizer because it. (A) multiplies very fast ...

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  4. Bio-pesticides are (A) The chemicals which are used to destroy the pe...

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  5. From which living organism penicillin is produced ? (A) Fungus (B) ...

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  6. Which virus is responsible for biotic control of insects and arthropod...

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  7. In biogas plants one of these will be essential: (A) Azolla (B) Rhi...

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  8. How flocks are made ? (A) By aerobic bacteria and filaments of fungi....

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  9. Milk is spoiled or fermented by (A) Rhizobium (B) Lactobacillus (...

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  10. Quantum 4000 is effective pest for cereals and vegetable crops is prep...

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  11. During which process floc is formed ?

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  12. From which of the following is citric acid is obtained ?

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  13. BOD is a parameter of.......

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  14. With whom BOD is associated ?

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  15. The main sources of biofertilisers are

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  16. Which is not a proper pair ?

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  17. Which is the characteristic of Bt cotton ? (A) Increases immunity (...

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  18. What is true about Bt toxin ? (A) Bt protein exists as active toxin i...

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  19. Which one is improper pair ? (A) Yeast-Ethanol (B) Penicillium - An...

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  20. Find a true statement from the given below. (a) Biogas is formed b...

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