Metabolism of Nitrogen
Metabolism of Nitrogen: Overview
In this topic, we will discuss the metabolism of nitrogen in plants. This process is conducted through the nitrogen cycle and biological nitrogen fixation.
Important Questions on Metabolism of Nitrogen
The enzyme responsible for the reduction of molecular nitrogen to the level of ammonia in the leguminous root nodule is:
Pseudomonas denitrificans helps in the reduction of nitrate into nitrogen.
Which among the following bacteria help in the process of nitrification?
What do you understand by the term nitrification?
Identify the ammonia-oxidizing bacteria.
Most nitrification occurs aerobically and is carried out exclusively by _____.
Represent the reduction of nitrite.
Describe the role of nitrogen cycle in the production of nitrogen oxides.
Nitrous oxide is produced primarily as an intermediate during both _____and denitrification.
List out the sources of nitrogen oxides.
Write a short note on nitrate assimilation.
Ammonia is combined with some organic acid to form amino acid.
Fill in the blank with the correct answer from the bracket.
_____ is the most important source of nitrogen to the plant. (Ammonia, Nitrate, Nitrite)
The transfer of the amino group to a keto acid is called transamination.
Fill in the blank with the correct option provided in the bracket.
Nodule formation starts in the _____ of the root. (pith, stele, cortex)
Roots of legumes secrete flavonoids, which attracts Rhizobium towards the root.
Root nodule is formed due to the _____ association between the leguminous plant and the host-specific bacteria called the Rhizobium.
Fill in the blank with the correct option from the bracket.
Nodule formation involves a sequence of multiple interactions between _____ bacteria and the roots of the host plant. (Azotobacter, Clostridium, Rhizobium)
