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Which of the following statements is not correct, in regard to nitrogen cycle?
- a)Bacteria and blue green algae present in the soil, fix atmospheric nitrogen and convert it to nitrogen compounds, to be used by the plants.
- b)Animals feeding on plants get proteins synthesised by them and other nitrogen compounds.
- c)When plants and animals die, bacteria and fungi present in the soil convert the nitrogenous wastes into nitrogenous compounds to be used by plants again.
- d)Certain other bacteria convert some part of them to nitrogen gas which goes back into the atmosphere.
Correct answer is option 'D'. Can you explain this answer?
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Which of the following statements is not correct, in regard to nitrog...
The correct answer is option D: Certain other bacteria convert some part of them to nitrogen gas which goes back into the atmosphere.
Explanation:
The nitrogen cycle is the process by which nitrogen is converted into various forms and cycled between different reservoirs in the environment. It involves several steps and organisms that play important roles in the conversion and utilization of nitrogen.
1. Nitrogen fixation:
- Bacteria and blue-green algae present in the soil are responsible for nitrogen fixation.
- They convert atmospheric nitrogen (N2) into nitrogen compounds such as ammonia (NH3) and nitrate (NO3-), which can be used by plants.
- This process is important as atmospheric nitrogen is not directly usable by most organisms.
2. Nitrogen assimilation:
- Plants take up the nitrogen compounds present in the soil and incorporate them into their own tissues.
- This allows plants to synthesize proteins and other nitrogen-containing compounds.
3. Nitrogen transfer through the food chain:
- Animals obtain nitrogen by consuming plants or other animals that have acquired nitrogen from plants.
- Proteins and other nitrogen compounds are transferred through the food chain.
4. Decomposition and mineralization:
- When plants and animals die, bacteria and fungi present in the soil break down their organic matter.
- During this decomposition process, nitrogenous wastes and organic compounds are converted into nitrogenous compounds that can be used by plants again.
- This step is crucial for the recycling of nitrogen in the ecosystem.
5. Denitrification:
- Certain bacteria, known as denitrifying bacteria, convert nitrogen compounds back into nitrogen gas (N2).
- This occurs under anaerobic conditions (low oxygen levels), such as in waterlogged soils or sediments.
- Denitrification completes the nitrogen cycle by returning nitrogen to the atmosphere.
However, option D states that certain other bacteria convert some part of them to nitrogen gas, which goes back into the atmosphere. This statement is incorrect.
- It is the denitrifying bacteria that are responsible for the conversion of nitrogen compounds to nitrogen gas.
- The other bacteria involved in the nitrogen cycle play roles in nitrogen fixation, assimilation, and decomposition, but they do not directly convert nitrogen compounds back into nitrogen gas.
- Denitrifying bacteria are specialized for this process and have enzymes that facilitate the conversion of nitrogen compounds to nitrogen gas.
In conclusion, the correct statement regarding the nitrogen cycle is that certain bacteria convert nitrogen compounds back into nitrogen gas, not other bacteria involved in the cycle.
Explanation:
The nitrogen cycle is the process by which nitrogen is converted into various forms and cycled between different reservoirs in the environment. It involves several steps and organisms that play important roles in the conversion and utilization of nitrogen.
1. Nitrogen fixation:
- Bacteria and blue-green algae present in the soil are responsible for nitrogen fixation.
- They convert atmospheric nitrogen (N2) into nitrogen compounds such as ammonia (NH3) and nitrate (NO3-), which can be used by plants.
- This process is important as atmospheric nitrogen is not directly usable by most organisms.
2. Nitrogen assimilation:
- Plants take up the nitrogen compounds present in the soil and incorporate them into their own tissues.
- This allows plants to synthesize proteins and other nitrogen-containing compounds.
3. Nitrogen transfer through the food chain:
- Animals obtain nitrogen by consuming plants or other animals that have acquired nitrogen from plants.
- Proteins and other nitrogen compounds are transferred through the food chain.
4. Decomposition and mineralization:
- When plants and animals die, bacteria and fungi present in the soil break down their organic matter.
- During this decomposition process, nitrogenous wastes and organic compounds are converted into nitrogenous compounds that can be used by plants again.
- This step is crucial for the recycling of nitrogen in the ecosystem.
5. Denitrification:
- Certain bacteria, known as denitrifying bacteria, convert nitrogen compounds back into nitrogen gas (N2).
- This occurs under anaerobic conditions (low oxygen levels), such as in waterlogged soils or sediments.
- Denitrification completes the nitrogen cycle by returning nitrogen to the atmosphere.
However, option D states that certain other bacteria convert some part of them to nitrogen gas, which goes back into the atmosphere. This statement is incorrect.
- It is the denitrifying bacteria that are responsible for the conversion of nitrogen compounds to nitrogen gas.
- The other bacteria involved in the nitrogen cycle play roles in nitrogen fixation, assimilation, and decomposition, but they do not directly convert nitrogen compounds back into nitrogen gas.
- Denitrifying bacteria are specialized for this process and have enzymes that facilitate the conversion of nitrogen compounds to nitrogen gas.
In conclusion, the correct statement regarding the nitrogen cycle is that certain bacteria convert nitrogen compounds back into nitrogen gas, not other bacteria involved in the cycle.
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Community Answer
Which of the following statements is not correct, in regard to nitrog...
- The atmospheric nitrogen cannot be taken directly by plants and animals. Certain bacteria and blue green algae present in the soil fix nitrogen from the atmosphere and convert into compounds of nitrogen.
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Which of the following statements is not correct, in regard to nitrogen cycle?a) Bacteria and blue green algae present in the soil, fix atmospheric nitrogen and convert it to nitrogen compounds, to be used by the plants.b) Animals feeding on plants get proteins synthesised by them and other nitrogen compounds.c) When plants and animals die, bacteria and fungi present in the soil convert the nitrogenous wastes into nitrogenous compounds to be used by plants again.d) Certain other bacteria convert some part of them to nitrogen gas which goes back into the atmosphere.Correct answer is option 'D'. Can you explain this answer?
Question Description
Which of the following statements is not correct, in regard to nitrogen cycle?a) Bacteria and blue green algae present in the soil, fix atmospheric nitrogen and convert it to nitrogen compounds, to be used by the plants.b) Animals feeding on plants get proteins synthesised by them and other nitrogen compounds.c) When plants and animals die, bacteria and fungi present in the soil convert the nitrogenous wastes into nitrogenous compounds to be used by plants again.d) Certain other bacteria convert some part of them to nitrogen gas which goes back into the atmosphere.Correct answer is option 'D'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Which of the following statements is not correct, in regard to nitrogen cycle?a) Bacteria and blue green algae present in the soil, fix atmospheric nitrogen and convert it to nitrogen compounds, to be used by the plants.b) Animals feeding on plants get proteins synthesised by them and other nitrogen compounds.c) When plants and animals die, bacteria and fungi present in the soil convert the nitrogenous wastes into nitrogenous compounds to be used by plants again.d) Certain other bacteria convert some part of them to nitrogen gas which goes back into the atmosphere.Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements is not correct, in regard to nitrogen cycle?a) Bacteria and blue green algae present in the soil, fix atmospheric nitrogen and convert it to nitrogen compounds, to be used by the plants.b) Animals feeding on plants get proteins synthesised by them and other nitrogen compounds.c) When plants and animals die, bacteria and fungi present in the soil convert the nitrogenous wastes into nitrogenous compounds to be used by plants again.d) Certain other bacteria convert some part of them to nitrogen gas which goes back into the atmosphere.Correct answer is option 'D'. Can you explain this answer?.
Which of the following statements is not correct, in regard to nitrogen cycle?a) Bacteria and blue green algae present in the soil, fix atmospheric nitrogen and convert it to nitrogen compounds, to be used by the plants.b) Animals feeding on plants get proteins synthesised by them and other nitrogen compounds.c) When plants and animals die, bacteria and fungi present in the soil convert the nitrogenous wastes into nitrogenous compounds to be used by plants again.d) Certain other bacteria convert some part of them to nitrogen gas which goes back into the atmosphere.Correct answer is option 'D'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Which of the following statements is not correct, in regard to nitrogen cycle?a) Bacteria and blue green algae present in the soil, fix atmospheric nitrogen and convert it to nitrogen compounds, to be used by the plants.b) Animals feeding on plants get proteins synthesised by them and other nitrogen compounds.c) When plants and animals die, bacteria and fungi present in the soil convert the nitrogenous wastes into nitrogenous compounds to be used by plants again.d) Certain other bacteria convert some part of them to nitrogen gas which goes back into the atmosphere.Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements is not correct, in regard to nitrogen cycle?a) Bacteria and blue green algae present in the soil, fix atmospheric nitrogen and convert it to nitrogen compounds, to be used by the plants.b) Animals feeding on plants get proteins synthesised by them and other nitrogen compounds.c) When plants and animals die, bacteria and fungi present in the soil convert the nitrogenous wastes into nitrogenous compounds to be used by plants again.d) Certain other bacteria convert some part of them to nitrogen gas which goes back into the atmosphere.Correct answer is option 'D'. Can you explain this answer?.
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Which of the following statements is not correct, in regard to nitrogen cycle?a) Bacteria and blue green algae present in the soil, fix atmospheric nitrogen and convert it to nitrogen compounds, to be used by the plants.b) Animals feeding on plants get proteins synthesised by them and other nitrogen compounds.c) When plants and animals die, bacteria and fungi present in the soil convert the nitrogenous wastes into nitrogenous compounds to be used by plants again.d) Certain other bacteria convert some part of them to nitrogen gas which goes back into the atmosphere.Correct answer is option 'D'. Can you explain this answer?, a detailed solution for Which of the following statements is not correct, in regard to nitrogen cycle?a) Bacteria and blue green algae present in the soil, fix atmospheric nitrogen and convert it to nitrogen compounds, to be used by the plants.b) Animals feeding on plants get proteins synthesised by them and other nitrogen compounds.c) When plants and animals die, bacteria and fungi present in the soil convert the nitrogenous wastes into nitrogenous compounds to be used by plants again.d) Certain other bacteria convert some part of them to nitrogen gas which goes back into the atmosphere.Correct answer is option 'D'. Can you explain this answer? has been provided alongside types of Which of the following statements is not correct, in regard to nitrogen cycle?a) Bacteria and blue green algae present in the soil, fix atmospheric nitrogen and convert it to nitrogen compounds, to be used by the plants.b) Animals feeding on plants get proteins synthesised by them and other nitrogen compounds.c) When plants and animals die, bacteria and fungi present in the soil convert the nitrogenous wastes into nitrogenous compounds to be used by plants again.d) Certain other bacteria convert some part of them to nitrogen gas which goes back into the atmosphere.Correct answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Which of the following statements is not correct, in regard to nitrogen cycle?a) Bacteria and blue green algae present in the soil, fix atmospheric nitrogen and convert it to nitrogen compounds, to be used by the plants.b) Animals feeding on plants get proteins synthesised by them and other nitrogen compounds.c) When plants and animals die, bacteria and fungi present in the soil convert the nitrogenous wastes into nitrogenous compounds to be used by plants again.d) Certain other bacteria convert some part of them to nitrogen gas which goes back into the atmosphere.Correct answer is option 'D'. Can you explain this answer? tests, examples and also practice UPSC tests.
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