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Which of the following is widely used as...

Which of the following is widely used as a successful biofertiliser in Indian rice fields ?

A

Rhizobium

B

Acacia arabica

C

Acalypha indica

D

Azolla pinnata

Text Solution

Verified by Experts

The correct Answer is:
D
Azolla pinnata is a small free floating freshwater fern which is widely used as a biofertiliser in India rice fields.
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NCERT FINGERTIPS-MICROBES IN HUMAN WELFARE-Microbes In Human Welfare
  1. A nitrogen fixing microbe associated with the fern Azolla in rice fiel...

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  2. Azolla pinnata has been found to be an important biofertiliser for pad...

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  3. Which of the following is widely used as a successful biofertiliser in...

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  4. Study the following statements and select the correct ones (i) Metha...

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  5. Which of the following statements is/are correct ?

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  6. Which of the following options includes biofertilisers ?

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  7. Which of the following is a non-symbiotic biofertiliser ?

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  8. Nitrogen fixation in root nodules of Alnus is brought about by

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  9. Farmers have reported over 50% higher yields of rice by using which of...

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  10. Match column I with column II and select the correct answer from the g...

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  11. Which of the followig statements is/are incorrect ? (i) Cyanobacteri...

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  12. Match column I with column II and select the correct answer from the g...

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  13. Which of the following curves correctly represents the process of anti...

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  14. In a microbiology laboratory, the technician uses heat to sterilise th...

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  15. Study the given differences between primary sludge and activated sludg...

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  16. Microbe used for biocontrol of pest bufferfly caterpillars is

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  17. In batch fermentation

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  18. The vitamin whos content increases following the conversion of milk in...

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  19. Wastewater treatment generates a large quantity of sludge, which can b...

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  20. Methanogenic bacteria are not found in

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