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  • Help me solve this A nitrogen-fixing microbe associated with Azolla in rice fields is :

A nitrogen-fixing microbe associated with Azolla in rice fields is :

  • Option 1)

    Spirulina

  • Option 2)

    Anabaena

  • Option 3)

    Frankia

  • Option 4)

    Tolypothrix

 

Answers (1)

best_answer

 

Symbotic nitrogen fixing bacteria -

1. Rhizobium - associated with roots of legume plants

2. Azolla (water fern) - associated with Anabaena azollae

3. Coralloid roots of Cycas -associated with Anabaena and Nostoc

-

 

 Azolla (water fern) is associated with Anbaena


Option 1)

Spirulina

This is the incorrect option

Option 2)

Anabaena

This is the correct option

Option 3)

Frankia

This is the incorrect option

Option 4)

Tolypothrix

This is the incorrect option

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Plabita

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