Multiple choice

Which of the following is the pair of biofertilisers?

  1. Azolla and blue green algae

  2. Nostoc and legume

  3. Rhizobium and grasses

  4. Salmonella & E. coli

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Azolla and blue-green algae (like Anabaena) are both widely used as biofertilizers in agriculture, particularly in rice cultivation.