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Nitrogen

Which of the ...

Question

Which of the following fixes atmospheric $N_{2}$ ?

A

Nostoc

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B

Algae

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C

Methanogens

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D

None of these

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Solution

The correct option is A Nostoc
Nostoc is a genus of cyanobacteria that are involved in nitrogen fixation. They are commonly found in the form of a gelatinous sheath that is composed of microfilaments.
So, the correct answer is 'Nostoc'.

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Similar questions

Refer the given passage and answer the following questions.

At present the primary nutrient which limits the agricultural yield is nitrogen (N). Some plants are capable to produce more

N_{2}

than they consume. These plants show symbioticz relationship with

N_{2}

-fixing bacteria such as Rhizobium. These bacteria produce root nodules in leguminous plants and convert atmospheric

N_{2}

into nitrogenous compounds. Rhizobium bacteria are gram negative bacteria, which show host specificity and fix

N_{2}

in the presence of a red pigment called leghaemoglobin. It protects nitrogen fixing enzyme nitrogenase from oxygen.

Which of the following statements is incorrect?

Which of the following fixes atmospheric nitrogen into the soil?

Q. Which of the following can fix atmospheric nitrogen directly?

Q. Which of the following does not fix atmospheric nitrogen?

Q. Sort the following compounds in atmospheric nitrogen fixation.

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