Question

Biofertilizer is best depicted by

• A. Nitrogen fixing bacteria in the root of higher plant
• B. Anabaena residing in Azolla in rice crops
  
• C. Fungi in the roots of plant
• D. All of the above

Answer 1

The correct option is D All of the above

A biofertilizer is a fertilizer containing living microorganisms. When applied to plant surfaces or soil, they colonize the rhizosphere or the interior of the plant and promotes growth by increasing the availability of nutrients to the host plant.

So, the correct answer is option D.