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प्रश्न
Your advice is sought to improve the nitrogen content of the soil to be used for cultivation of a non-leguminous terrestrial crop.
- Recommend two microbes that can enrich the soil with nitrogen.
- Why do leguminous crops not require such enrichment of the soil?
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उत्तर
- Two microbes that can enrich the soil with nitrogen are Nostoc and Anabaena.
- Legumes are very good for enriching the soil. They do not require any enrichment, as in their case nitrogen is fixed symbiotically. They have nodules on their roots with bacteria called rhizobium, whose function is to fix the atmospheric nitrogen directly into the soil. These nodules contain all the necessary components for nitrogen fixation.
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संबंधित प्रश्न
What are 'biofertilizers'? Explain them with suitable examples.
Give the meaning of the Nif gene.
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An organism used as a biofertiliser for raising soyabean crop prediction is:
Which one of the following is NOT a nitrogen-fixing organism?
Glomus is a ______.
How do mycorrhizal fungi help the plants harbouring them?
Farmers are often suggested to use the following organism in their crop land so as to improve the soil fertility. Explain.
Anabaena
Match the pairs:
| Column A | Column B | ||
| (i) | Compost making biofertilizer |
(a) | Azotobacter |
| (ii) | N2 fixing biofertilizer | (b) | Mycorrhiza |
| (iii) | Fungal biofertilizer | (c) | Agrobacterium |
| (iv) | Phosphate solubilizing biofertilizer |
(d) | Actinobocteria |
Endomycorrhizae grow in ______ of higher plants.
Which of the following organisms is a nitrogen-fixing bacterium that forms a symbiotic association with leguminous plants?
Which organisms are classified as nitrogen-fixing microbes that convert atmospheric nitrogen into usable forms?
How do the functions of Frankia compare to those of Rhizobium in nitrogen fixation?
Which biofertilizer component is most effective for enhancing phosphorus and mineral absorption while providing pathogen protection?
