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प्रश्न
What is a heterocyst?
Give the role of a heterocyst.
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उत्तर
The Blue Green Algae (BGA) have some specialized colourless cells called heterocysts which are the sites of nitrogen fixation.
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संबंधित 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?
State any three benefits of mycorrhiza.
Match the column A with B and rewrite correct pairs.
| A | B | |
| i. | Symbiotic N2 fixing bacteria | VAM |
| ii. | Free-living N2 fixing bacteria | Rhizobium |
| iii. | Phosphate solubilizer | Nostoc |
| iv. | Endomycorrhizae | Microccocus |
Glomus is a ______.
Farmers are often suggested to use the following organism in their crop land so as to improve the soil fertility. Explain.
Rhizobium
Which one of the following statement is correctly matched?
Azolla is used as biofertiliser because it ______.
- Give an example of a genus of fungi that forms mycorhizal association with plants.
- How does the plant derive benefits from this association?
Aspergillus niger is used to manufacture
Name the microorganisms involved in the production of Roquefort cheese, Camembert cheese and Swiss cheese.
