MCQ
Some blue green algae can be used as biofertilizer as they are:
- APhotosynthetic
- BSurrounded by mucilage
- CGrowing every where
- DCapable of fixing nitrogen
✓
Answer
- Capable of fixing nitrogen
Explanation:
Some blue-green algae can fix atmospheric nitrogen because they contain an O2 sensitive enzyme nitrogenase. They live in close association with the roots of the plant and fix the atmospheric nitrogen into the soluble form which is utilized by the plant.
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