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Write the role of nitrogenase enzyme in nitrogen fixation? - Botany

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प्रश्न

Write the role of nitrogenase enzyme in nitrogen fixation?

थोडक्यात उत्तर
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उत्तर

Nitrogen fixation is the first step in the Nitrogen cycle, during which gaseous nitrogen from the atmosphere is fixed. It required nitrogenase enzyme complex nitrogenase is active only in anaerobic conditions. To create this anaerobic condition, a pigment known as leghaemoglobin is synthesized in the nodules which acts as oxygen scavenger and remove oxygen.

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पाठ 12: Mineral Nutrition - Evaluation [पृष्ठ ११०]

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सामाचीर कलवी Botany [English] Class 11 TN Board
पाठ 12 Mineral Nutrition
Evaluation | Q 9. | पृष्ठ ११०
सामाचीर कलवी Biology (Botany) [English] Class 11 TN Board
पाठ 12 Mineral Nutrition
Evaluation | Q 9. | पृष्ठ २४०

संबंधित प्रश्‍न

Blue green algae fix _________ directly from air to enhance fertility of soil.


Name four types of bacteria involved in nitrogen cycle.


Write a note on nitrogen fixation?


Very Short Answer Question:

What is denitrification?


Long Answer Question:

Explain biological nitrogen fixation with example.


How do human activities affect nitrogen cycle?


Which free living microorganism helps in nitrogen fixation?


When we breathe in air, nitrogen also goes inside along with oxygen. What is the fate of this nitrogen?


Polio drops are not given to children suffering from diarrhoea. Why?


How do vaccines work?


In the nitrogen cycle, which of the following play an important role? 


Match Column - I with Column - II.

Column - I Column - II
(a) Nitrococcus (i) Denitrification
(b) Rhizobium  (ii) Conversion of ammonia to nitrite
(c) Thiobacillus (iii) Conversion of nitrite to nitrate
(d) Nitrobacter (iv) Conversion of atmospheric nitrogen to ammonia

Choose the correct answer from the options given below.


Free-living soil bacteria such as Pseudomonas sp. are responsible for the ______ process in the nitrogen cycle.


______ is the primary nutrient, important for the survival of all living organisms.


Assertion (A): Plants and animals can utilize atmospheric nitrogen.
Reason (R): The atmosphere is a rich source of nitrogen.


Draw a neat flow chart of the Nitrogen cycle. Briefly explain the various processes involved in the nitrogen cycle.


Name any two nitrifying bacteria in soil.


Which of the following statement is incorrect with regard to combustion?


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