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प्रश्न
What are 'biofertilizers'? Explain them with suitable examples.
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उत्तर
Biofertilizers: The biofertilizers are nitrogen fixing microbes or fungi which enrich the soil with nutrients.
There are 3 major types of biofertilizers i.e. bacterial biofertilizers, cyanobacterial biofertilizers and fungal biofertilizers.
Examples of biofertilizers:
- Nitrogen-fixing symbiotic bacterial biofertilizer - Rhizobium in root nodule of leguminous plants.
- Nitrogen-fixing symbiotic cyanobacterial biofertilizers - Anabaena azollae in Azolla.
- Nitrogen-fixing non-symbiotic cyanobacterial biofertilizers - Nostoc, Anabaena.
- Mycorrhizal Fungal biofertilizer - Ectotrophic mycorrhiza and Endotrophic mycorrhiza - VAM.
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संबंधित प्रश्न
How do biofertilisers enrich the fertility of the soil?
Give the meaning of the Nif gene.
How does the application of cyanobacteria help improve agricultural output?
Explain the interrelationship between organic farming and biofertilizers, with the help of any three suitable examples.
Define estuary.
identify the plants with which Anabaena, is associated.
Identify the CORRECT statement regarding Mycorrhiza.
Which of the following statements are CORRECT regarding Anabaena and Frankia?
Which one of the following is not a biofertilizer?
- Give an example of a genus of fungi that forms mycorhizal association with plants.
- How does the plant derive benefits from this association?
