Azolla is an aquatic fern that lives in symbiotic association with the nitrogen-fixing cyanobacterium Anabaena azollae. This symbiosis enables Azolla to fix atmospheric nitrogen. Azolla is widely used as a green manure or biofertilizer primarily in paddy (rice) cultivation due to the waterlogged conditions required for its growth. It is not typically associated with maize cultivation.
Which one of the following is not correctly matched? Nitrogen fixing agent - Crop
Asked in UPPCS Prelims 2017 · Topic: Biofertilizers (Nitrogen-fixing Biofertilizers: Non-symbiotic/Free-living (e.g., Azotobacter, Azospirillum, Cyanobacteria/BGA))
More Biology questions
- The aquatic plant commonly used as bio fertilizer in the water-logged rice field is -
- Consider the following organisms : 1. Agaricus 2. Nostoc 3. Spirogyra Which of the above is/are used as biofertilizer/ biofertilizers?
- Agaricus is a genus of fungi (mushrooms) and is not generally used as a biofertilizer. Some fungi like mycorrhizal fungi are used as biofertilizers as they enhance nutrient uptake, but Agaricus is not primarily used for this purpose. 2. Nostoc is a genus of cyanobacteria (blue-green algae) known for its ability to fix atmospheric nitrogen. It is widely used as a biofertilizer, especially in paddy fields. 3. Spirogyra is a genus of filamentous green algae. It is photosynthetic but does not fix nitrogen and is not used as a biofertilizer. 30. Which of the following is a source of biofertilizer?
- Blue green algae is used to supply nitrogen to
- Azolla is often used as biofertilizer, because it is associated with
- Which of the following micro organisms are used as biofertilizer?
- Which one of the following organisms can serve as a biofertilizer for rice crop?
- Azolla-Anabaena Bio-fertilizer is used for crop: