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Select the match ones. I. nitrosomonas...

Select the match ones.
I. nitrosomonas-Nitrite to nitrate ltBrgt II. Thiobacillus-Denitrification.
III. Nostoc-Free-living nitrogen-fixer
IV. Azotobacter-Anaerobic nitrogen-fixer

A

I and III

B

III and IV

C

II and III

D

II and IV

Text Solution

Verified by Experts

The correct Answer is:
C
Nitrate present in the soil is reduced to nitrogen by the process of denitrification. Denitrification is carried out by bacteria Pseudomonas and Thiobacillus. A number of cyanobacteria such as Anabaena and Nosstoc are free-living nitrogen-fixers. Azotobacter and Beijernickia are free-living nitrogen fixing aerobic microbes. nitrosomonas or Nitrosococcus oxidise `NH_(3)` to nitrite. the nitrite is further oxidised to nitrate with the help of Nitrobacter and Nitrocystic.
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Explore conceptually related problems

Select the correct match {:("(A) Nirosomonas - Nitrite to nitrate"),("(B) Thiobacillus - Denitrification"),("(C) Nostoc - Free-living nitrogen-fixer"),("(D) Azotobacter - Anaerobic nitrogen-fixer"):}

Select the correct match |{:(A.,"Nitrosomonas",-,"Nitrite to nitrate"),(B.,"Thiobacillus",-,"Denitrification"),(C.,"Nostoc",-,"Free-living nitrogen-fixer"),(D.,"Azotobacter",-,"Anaerobic nitrogen-fixer"):}|

Assertion: Reduction of nitrogen to ammnia by living organisms is called nitrification. Reason: Example of free-living nitrogen fixing anaerobic microbes are Azotobacter and Bijerinckia.

Which of the following statements about the nitrogen cycle are false ? 1. Rhizobium and Frankia cause nitrogen fixation in their independent free - living stage . 2. Azotobacter and Anabaena are anaerobic, symbiotic , free - living , nitrogen fixers. 3. Rhodospirillum is an aerobic , nitrogen -fixing microbe found in the root nodules of legumes . 4. Nitrobacter oxidizes nitrites to nitrates .

Nitrifying bacteria can oxididies ammonia in two stages ltbrlt I. first forming nitrite ions. II. Second forming nitrate ions. III. First forming nitrate ions. IV. second forming nitrite ions.

Match the column and choose the correct option {:("Column I","Column II"),(A."Free-livin aerobic nitrogen fixers",i."Anabaena and Nostoc"),(2."Anaerobic nitrogen",ii."Pseudomonas and Thiobacillus"),(C."Nitrogen-fixing",iii."Nitrosomonas and Nitrosococcus"),(D."Denitrifying bacteria",iv."Azotobacter and beijerinckia"),(E."Nitrigying bacteria",v."Rhodospirillum"):}

Azotobacter bacterium is anaerobic/aerobic free living N_2 -fixer.

Study the following statements and select the correct ones . (i) Methanogens are archaebacteria which fixes atmsopheric nitrogen (ii) Nostic is a filamentous blue green alga which fixes atmospheric nitrogen. (iii) Mycoplasma lack cell wall and can surive without oxygen.

Match the column and choose the correct answers: {:("Column I","Column II"),(A."Thiobacillus",i."Nitrogen-fixation"),(B."Nitrosomonas",ii."Ammonifiation"),(C."Azotobacter",iii."Nitrification"),(D."Clostridium",iv."Denitrificaion"):}

ARIHANT NEET-MINERAL NUTRITION-Chapter Exercises (C) Medical Entrances gallery (Collection of questions asked in NEET & Various Medical Entrance Exams)
  1. Which one of the following is a micronutrient in plants?

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  2. Which of the following minerals activate the enzymes involved in respi...

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  3. Select the match ones. I. nitrosomonas-Nitrite to nitrate ltBrgt II....

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  4. Which one of the following is not a micronutrient

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  5. Which of the following is an amide involved in nitrogen metabo...

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  6. Which of the following is a bacterium involvedin denitrification?

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  7. The minerals involved in waer splitting reaction during photosynthesis...

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  8. Necrosis, or death of tissue particularly leaf tissue, is due to the d...

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  9. Manganese is required in

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  10. Insectivorous plants live in a soil that is usually deficient in

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  11. The enzyme responsible for the reduction of molecular nitrogen to the ...

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  12. Which one depicts nitrogen-fixation?

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  13. Plant having nitrogen fixing bacteria is

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  14. Bacterium, which reduces nitrates in soil to nitrogen is

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  15. Which one of the following plant functions as symbiotic nitrogen-fixin...

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  16. A free-living nitrogen-fixing cyanobacterium which can also form symbi...

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  17. Nitrifying bacteria are able to

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  18. About 98 percent of the mass of every living organism is composed of j...

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  19. On the basis of symptoms of chlorosis in leaves, a student inferred th...

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  20. Zn, Mo, Fe, Cu are

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