Saved Bookmarks
| 1. |
Heterocysts present in Nostoc are specialsed forA. fragmentationB. nitrogen-fixationC. symbiotic relationD. food storage |
|
Answer» Correct Answer - B Cynobacteria like Nostoc can fix nitrogen through a specific structure called heterocysts. They fix atmospheric `N_(2)` using niterogenase enzyme which gets inactivated in presence of oxygen. Hence, the heterocysts creates a micro anaerobic environment in them to facilitate nitrogen-fixation. |
|