ICSE BoardEnglish MediumSTD 9BIOLOGYBiotechnology Applications2 Marks
Question
What are biofertilizers?
✓
Answer
Biofertilisers are organisms that enrich the nutrient quality of the soil. The main sources of biofertilisers are bacteria, fungi and cyanobacteria. Certain bacteria and blue-green algae fix atmospheric nitrogen and make it available to plants.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.