HORTICULTURE SCIENCE
CROP PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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C4 plants
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C2 plants
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C3 and C4 plants
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C3 plants
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Detailed explanation-1: -C4 plants. The correct option is B: Explanation of the correct answer: Phosphoenolpyruvate (PEP) is the 3-Carbon compound and acts as the primary CO2 acceptor in the mesophyll cells of C4 plants, leading to the formation of OAA (Oxaloacetic acid), C4 acid.
Detailed explanation-2: -The carbon dioxide acceptor in CAM plants is Phosphoenol pyruvic acid (PEP) during the night and Ribulose bisphosphate is carbon dioxide acceptor during day time. The first stable product in case of CAM plants is Oxalo acetic acid (OAA).
Detailed explanation-3: -CO 2 is initially fixed in the mesophyll cells by the enzyme PEP carboxylase which reacts the three carbon phosphoenolpyruvate (PEP) with CO 2 to form the four carbon oxaloacetic acid (OAA).