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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
Microbes can be used to decrease the use of chemical fertilisers and pesticides. Explain how this can be accomplished.
Explain the interrelationship between organic farming and biofertilizers, with the help of any three suitable examples.
Identify free-living bacterial bio-fertilizer.
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 |
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?
The biological agent which is used to kill or check proliferation of disease causing agents is called ____________.
Which one of the following is NOT a nitrogen-fixing organism?
Name the microorganisms involved in the production of Roquefort cheese, Camembert cheese and Swiss cheese.
