HORTICULTURE SCIENCE
CROP PHYSIOLOGY
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The process which makes major difference between C3 and C4 plants is ;
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Calvin cycle
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Photorespiration
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Respiration
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Glycolysis
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Explanation:
Detailed explanation-1: -Hence, the correct answer is ‘Photorespiration’.
Detailed explanation-2: -Photorespiration happens in C3 plants when the CO2 concentration drops to about 50 ppm. The key enzyme that accomplishes the fixing of carbon is rubisco, and at low concentrations of CO2 it begins to fix oxygen instead.
Detailed explanation-3: -Spatial separation of carbon dioxide fixation and RUBISCO activity in mesophyll and bundle sheath cells of C4 plants respectively avoids photorespiration by concentrating CO2 in bundle sheath cells to scale down the oxygenase activity of RUBISCO and increase the RUBISCO efficiency which is not the case in C3 plants.
There is 1 question to complete.