Which of the following is a biofertilizer?

  • A
    Anabaena and Azolla
  • B
    Cow dung,agricultural waste
  • C
    Sludge left in biogas plant
  • D
    All of the above

Explore More

Similar Questions

The main source of biofertilizers is:

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

Which of the following aquatic ferns is used as an excellent biofertilizer?

Which of the following is not useful as a biofertilizer?

Blue-green algae increase which of the following in the soil?

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo