- Azolla is an aquatic fern that harbors a symbiotic cyanobacterium, Anabaena azollae, within cavities in its fronds. - The cyanobacteria are capable of fixing atmospheric nitrogen (N2) into ammonia (NH3), a form usable by plants. - This fixed nitrogen is utilized by the Azolla fern for its growth, and when Azolla decomposes or is incorporated into the soil (particularly in rice paddies), the fixed nitrogen becomes available to the crop plants.
Azolla is used as a bio-fertilizer as it possesses _______
Asked in GPSC Prelims CSP 2 2024 · Topic: Biofertilizers (Nitrogen-fixing Biofertilizers: Non-symbiotic/Free-living (e.g., Azotobacter, Azospirillum, Cyanobacteria/BGA))
More Biology questions
- The bio-fertilizer used as a supplementary food for the cattle, especially for milking bovines is
- Which of the following is associated with biological nitrogen fixation?
- Which one of the following is not correctly matched? Nitrogen fixing agent - Crop
- 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