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प्रश्न
What is the principle underlying the use of cyanobacteria in agricultural fields for crop improvement?
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उत्तर
Cyanobacteria are capable of fixing nitrogen with the help of specialised cells called the heterocyst. They enrich soil fertility. Hence BGA’s are used in agricultural fields. E.g. Colonies of Nostoc and Anabaena grow in Paddy fields.
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संबंधित प्रश्न
Which bacteria are rod shaped?
Name the three common types of bacteria.
In what form bacteria may be present in the air?
Define the following:
Gram negative and Gram positive bacteria
Write short notes on:
Shape of bacteria
Write short notes on:
Flagellation in bacteria
The question has four options. Choose the correct answer:
Which scientist first discovered the bacteria?
All bacteria have flagella.
Match the following.
| Nitrogen-fixing bacteria | Vaccine |
| Tuberculosis | Prion |
| Kuru | Lactobacillus acidophilus |
| Probiotics | Bacteria |
| Edward Jenner | Rhizobium |
Identify the incorrect statement about the Gram positive bacteria
______ is a bacterial disease and it transmits through contamination of wounds, with the bacteria.
E.coli is an example of ______ bacteria.
______ are considered to be the first living organisms on earth.
Why is the nuclear content of a bacterial cell called nucleoid?
The bacterial cell was covered by a strong cell wall made up of ______.
In bacteria, a small extra chromosomal circular DNA called ______ is found in the cytoplasm.
Assertion: Some bacteria may be non-motile.
Reason: Bacteria have a special structure called flagella which are found on cell surfaces.
What is bacteria?
Organisms living in salty areas are called as ______.
