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प्रश्न
Give two examples of biofertilizer.
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उत्तर
Two examples of biofertilizers are as follows:
- Rhizobium - nitrogen-fixing bacteria forming root nodules in legumes.
- Azotobacter - free-living nitrogen-fixing bacteria in soil.
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संबंधित प्रश्न
Find out the role of microbes in the following:
Soil
How do biofertilisers enrich the fertility of the soil?
What is a heterocyst?
How does the application of cyanobacteria help improve agricultural output?
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?
Which one of the following is a free-living bacterial biofertilizer?
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 |
Which of the following is one of the basic elements considered in green revolution?
Which of the following is/are symbiotic nitrogen fixing microbe?
VAM stands for ______.
Which of the following statements are CORRECT regarding Anabaena and Frankia?
Anabaena forms symbiotic relationship coralloid roots of ______.
The biological agent which is used to kill or check proliferation of disease causing agents is called ____________.
Glomus is a ______.
Biofertilizers are
Which one of the following is not a nitrogen-fixing organism?
Why are cyanobacteria considered useful in paddy fields?
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 ______.
Aspergillus niger is used to manufacture
Which of the following bacteria do not solubilize the insoluble rock phosphate?
Endomycorrhizae grow in ______ of higher plants.
What is the structural feature of mycorrhiza that enables enhanced mineral absorption?
Which biofertilizer system is particularly significant for rice cultivation in paddy fields?
