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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
How do biofertilisers enrich the fertility of the soil?
Name the aquatic fern commonly used in paddy fields as a biofertilizer.
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 a free-floating aquatic fern?
From the following pairs of microbes, identify the pair that has both the microbes that can be used as Biofertilizers.
By application of ____________ yield of paddy field can be increased.
Which of the following is/are symbiotic nitrogen fixing microbe?
Anabaena forms symbiotic relationship coralloid roots of ______.
Mycorrhiza forms symbiotic association with ____________ of higher plants.
In plant breeding, biofortification is a method ____________.
The biological agent which is used to kill or check proliferation of disease causing agents is called ____________.
VAM is a type of ______
An organism used as a biofertiliser for raising soyabean crop prediction is:
Glomus is a ______.
Which one of the following is not a nitrogen-fixing organism?
How do mycorrhizal fungi help the plants harbouring them?
Azolla is used as biofertiliser because it ______.
Aspergillus niger is used to manufacture
Name the microorganisms involved in the production of Roquefort cheese, Camembert cheese and Swiss cheese.
Which of following organisms cannot fix nitrogen?
- Azotobacter
- Oscillatoria
- Anabaena
- Volvoх
- Nostoc
Choose the correct answer from the options given below:
Which of the following bacteria do not solubilize the insoluble rock phosphate?
How many statements are true about biofertilizers?
- They are nitrogen fixers.
- They are commercial preparation of live bacteria and fungi.
- Use of biofertilizers is expensive.
- There is only one type of biofertilizer.
- They are classified as inorganic.
Which of the following is NOT a primary benefit of using biofertilizers in agriculture?
What is the structural feature of mycorrhiza that enables enhanced mineral absorption?
How do the functions of Frankia compare to those of Rhizobium in nitrogen fixation?
What is the fundamental characteristic that defines biofertilizers as living organisms?
