Match the Column I with Column II :
| Column I | ColumnII |
| (A) Aspergillus | (i) Free-living nitrogen fixing bacteria |
| (B) Azotobacter | (ii) Citric acid |
| (C) Rhizobium | (iii) Cyanobacterial biofertilizers |
| (D) Nostoc,Anabaena | (iv) Rhizobial biofertilizers |
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) –(A)-ii , (B)-i, (C)-iv , (D)- iii
| Column I | ColumnII |
| (A) Aspergillus | (ii) Citric acid |
| (B) Azotobacter | (i) Free living nitrogen fixing bacteria |
| (C) Rhizobium | (iv) Rhizobial biofertilizers |
| (D) Nostoc,Anabaena | (iii) Cyanobacterial biofertilizers |
(A) Aspergillus — (ii) Citric acid:
Aspergillus is a genus of fungi that is used in the industrial production of citric acid.
(B) Azotobacter — (i) Free-living nitrogen-fixing bacteria:
Azotobacter is a free-living nitrogen-fixing bacterium found in the soil, which plays a key role in nitrogen fixation.
(C) Rhizobium — (iv) Rhizobial biofertilizers:
Rhizobium is a bacterium that forms symbiotic relationships with legumes to fix atmospheric nitrogen, commonly used as a biofertilizer.
(D) Nostoc, Anabaena — (iii) Cyanobacterial biofertilizers:
Nostoc and Anabaena are cyanobacteria capable of fixing nitrogen, and are used as biofertilizers in agriculture.