The biofertilizer present in the roots of legumes is

  • A
    Anabaena
  • B
    Rhizobium
  • C
    Azospirillum
  • D
    All of the above

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Differentiate between chemical fertilizers and biofertilizers.

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Which of the following is used as a biofertilizer in paddy fields?

Which of the following symbiotic associations is not useful as a biofertilizer?

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