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In nitrification, ammonia is first oxidi...

In nitrification, ammonia is first oxidised to nitrite by

A

Nitrosomonas

B

Nitrobacter

C

Nitrosococcus

D

1 & 3

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The correct Answer is:
D
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Nitrification is

Consider the following statements :- (i) Bacteria have rigid cell wall made up of cellulose (ii) Bacteria do not reproduce by sexual reproduction. (iii) Ammonia is oxidised to nitrite by the bacteria Nitrosomonas. (iv) Viruses are obligate parasites, cannot be living without host cell. Which of the statements are correct and incorrect ?

Nitrite is oxidised to nitrate with the help of

Ammonia is not used

A : Ammonia is oxidised first to nitrate then to nitrite by the action of Nitrosomonas and Nitrobacter respectively. R : Nitrite thus formed is absorbed by leaves.

The conversion of ammonia to nitrite and then to nitrate is called ………………………………

Nitrification was discovered by:

Ammonium chloride and sodium nitrite.

Conversion of organic nitrogen into ammonia, N_(2) gas into ammonia, nitrates into ammonia and ammonia into nitrates are respectively known as

How can nitrite ion be distinguished from nitrate ion?

AAKASH SERIES-MINERAL NUTRITION-Exercise - II
  1. Presence of phosphorus in a plant :

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  2. The four elements that make up 99% of all elements found in a living s...

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  3. A red pigment leghaemoglobin in root nodules a legumes is helpful in n...

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  4. Hunger sign's in plants are :

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  5. In absence of essential mineral elements, leaves of many plants turn y...

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  6. Permeability of protoplasm is accelerated by :

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  7. In fruit trees a disease 'exanthema' is caused by the deficiency of :

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  8. Salt respiration is

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  9. Non-symbiotic nitrogen fixing prokaryote is

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  10. Main role of minor elements is to act as

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  11. In nitrification, ammonia is first oxidised to nitrite by

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  12. Which of the following is not the function of iron as nutrient in plan...

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  13. Electron donor to the enzyme nitrogenase in nitrogen metabolism and to...

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  14. Match the following columns

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  15. Oxygen evolving and nitrogen fixing organisms is

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  16. Root nodules with Rhizobium and without leghaemoglobin are found in

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  17. Which saprophytic prokaryote becomes an endosymbiotic diazotroph ?

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  18. Number of carbon atoms present in citric acid, oxaloacetic acid and py...

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  19. In the root nodules of Myrica, symbiotic nitrogen fixing organism is

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  20. Which of the following can fix the atmospheric nitrogen both in symbio...

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