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In C4 plants, photorespiration does not occur because
- a)Regeneration of PEP occurs continuously
- b)PEPcase occurs in mesophyll cytosol
- c)Of the increased concentration of CO2 at the enzyme site
- d)C4 plants show double carboxylation in bundle shealth cells
Correct answer is option 'C'. Can you explain this answer?
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In C4 plants, photorespiration does not occur becausea)Regeneration o...
Explanation:
C4 plants have a unique mechanism to overcome the problem of photorespiration that occurs in C3 plants. In C3 plants, photorespiration occurs when the concentration of CO2 is low and O2 is high. This leads to the breakdown of the organic compounds formed during photosynthesis, which results in the loss of energy and carbon. In C4 plants, this problem is overcome by the following mechanism:
Concentration of CO2:
C4 plants have a higher concentration of CO2 in the bundle sheath cells where the Calvin cycle occurs. This is achieved by pumping CO2 from the mesophyll cells to the bundle sheath cells using the C4 cycle.
C4 cycle:
The C4 cycle involves the fixation of CO2 into a four-carbon compound, which is then transported to the bundle sheath cells. This cycle occurs in the mesophyll cells, where the enzyme PEP carboxylase fixes CO2 into a four-carbon compound called oxaloacetate. This compound is then converted into malate, which is transported to the bundle sheath cells.
Calvin cycle:
In the bundle sheath cells, malate is decarboxylated to release CO2, which is then fixed by Rubisco into a three-carbon compound during the Calvin cycle. This cycle occurs in the presence of a high concentration of CO2, which prevents the occurrence of photorespiration.
Conclusion:
Thus, the reason why photorespiration does not occur in C4 plants is due to the increased concentration of CO2 at the enzyme site, which prevents the breakdown of organic compounds formed during photosynthesis.
C4 plants have a unique mechanism to overcome the problem of photorespiration that occurs in C3 plants. In C3 plants, photorespiration occurs when the concentration of CO2 is low and O2 is high. This leads to the breakdown of the organic compounds formed during photosynthesis, which results in the loss of energy and carbon. In C4 plants, this problem is overcome by the following mechanism:
Concentration of CO2:
C4 plants have a higher concentration of CO2 in the bundle sheath cells where the Calvin cycle occurs. This is achieved by pumping CO2 from the mesophyll cells to the bundle sheath cells using the C4 cycle.
C4 cycle:
The C4 cycle involves the fixation of CO2 into a four-carbon compound, which is then transported to the bundle sheath cells. This cycle occurs in the mesophyll cells, where the enzyme PEP carboxylase fixes CO2 into a four-carbon compound called oxaloacetate. This compound is then converted into malate, which is transported to the bundle sheath cells.
Calvin cycle:
In the bundle sheath cells, malate is decarboxylated to release CO2, which is then fixed by Rubisco into a three-carbon compound during the Calvin cycle. This cycle occurs in the presence of a high concentration of CO2, which prevents the occurrence of photorespiration.
Conclusion:
Thus, the reason why photorespiration does not occur in C4 plants is due to the increased concentration of CO2 at the enzyme site, which prevents the breakdown of organic compounds formed during photosynthesis.
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In C4 plants, photorespiration does not occur becausea)Regeneration o...
In bundle sheath cells. RuBisCO has higher concentration of CO2.
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In C4 plants, photorespiration does not occur becausea)Regeneration of PEP occurs continuouslyb)PEPcase occurs in mesophyll cytosolc)Of the increased concentration of CO2 at the enzyme sited)C4 plants show double carboxylation in bundle shealth cellsCorrect answer is option 'C'. Can you explain this answer?
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In C4 plants, photorespiration does not occur becausea)Regeneration of PEP occurs continuouslyb)PEPcase occurs in mesophyll cytosolc)Of the increased concentration of CO2 at the enzyme sited)C4 plants show double carboxylation in bundle shealth cellsCorrect answer is option 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about In C4 plants, photorespiration does not occur becausea)Regeneration of PEP occurs continuouslyb)PEPcase occurs in mesophyll cytosolc)Of the increased concentration of CO2 at the enzyme sited)C4 plants show double carboxylation in bundle shealth cellsCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In C4 plants, photorespiration does not occur becausea)Regeneration of PEP occurs continuouslyb)PEPcase occurs in mesophyll cytosolc)Of the increased concentration of CO2 at the enzyme sited)C4 plants show double carboxylation in bundle shealth cellsCorrect answer is option 'C'. Can you explain this answer?.
In C4 plants, photorespiration does not occur becausea)Regeneration of PEP occurs continuouslyb)PEPcase occurs in mesophyll cytosolc)Of the increased concentration of CO2 at the enzyme sited)C4 plants show double carboxylation in bundle shealth cellsCorrect answer is option 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about In C4 plants, photorespiration does not occur becausea)Regeneration of PEP occurs continuouslyb)PEPcase occurs in mesophyll cytosolc)Of the increased concentration of CO2 at the enzyme sited)C4 plants show double carboxylation in bundle shealth cellsCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In C4 plants, photorespiration does not occur becausea)Regeneration of PEP occurs continuouslyb)PEPcase occurs in mesophyll cytosolc)Of the increased concentration of CO2 at the enzyme sited)C4 plants show double carboxylation in bundle shealth cellsCorrect answer is option 'C'. Can you explain this answer?.
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In C4 plants, photorespiration does not occur becausea)Regeneration of PEP occurs continuouslyb)PEPcase occurs in mesophyll cytosolc)Of the increased concentration of CO2 at the enzyme sited)C4 plants show double carboxylation in bundle shealth cellsCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for In C4 plants, photorespiration does not occur becausea)Regeneration of PEP occurs continuouslyb)PEPcase occurs in mesophyll cytosolc)Of the increased concentration of CO2 at the enzyme sited)C4 plants show double carboxylation in bundle shealth cellsCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of In C4 plants, photorespiration does not occur becausea)Regeneration of PEP occurs continuouslyb)PEPcase occurs in mesophyll cytosolc)Of the increased concentration of CO2 at the enzyme sited)C4 plants show double carboxylation in bundle shealth cellsCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
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