Leguminous plants are able to fix atmospheric nitrogen through the process of symbiotic nitrogen fixation. Which one of the following is not correct during the process of this nitrogen fixation?

Leghaemoglobin scavenges oxygen and is pinkish in colour

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Nodules acts as site for nitrogen fixation

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The enzyme nitrogenise catalyses the conversion of atmospheric N₂to NH₃

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Nitrogenase is insensitive to oxygen.

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Solution

The correct option is D
Nitrogenase is insensitive to oxygen.

Nitrogenase is rapidly destroyed by oxygen,in vitroandin vivo, so nitrogen-fixing organisms face the problem of protecting their nitrogenase from inactivation by oxygen. The need to protect nitrogenase becomes particularly important in the cyanobacteria, which evolve oxygen photosynthetically.

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Similar questions

Leguminous plants are able to fix atmospheric nitrogen through the process of symbiotic nitrogen fixation. Which one of the following is not correct during the process of this nitrogen fixation?

Q. Leguminous plants are able to fix atmospheric nitrogen through symbiotic activity. Which is not correct?

Q. Assertion :The enzyme nitrogenase is a Mo-Fe protein and catalyses the conversion of atmospheric nitrogen to ammonia. Reason: The enzyme nitrigenase is highly sensitive to the molecular oxygen.

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 a symbiotic 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.

Read the given statements and select the correct answer.

Statement 1: Rhizobium bacteria can also live freely in the soil and carry out

N_{2}

-fixation by themselves.
Statement 2: Such Rhizobium bacteria are called free-living

N_{2}

-fixing bacteria.

Q. Conversion of atmospheric nitrogen to one molecule of ammonia by nitrogenase enzyme complex requires

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