Botany-Calvin Cycle
NEET Botany Calvin Cycle MCQ Question
Type: MCQ-diagram based-Hard-Class 11
Consider a diagram of the Calvin cycle showing the carboxylation phase. Which molecule acts as the initial CO2 acceptor?
A
Ribulose-1,5-bisphosphate (RuBP)
B
3-phosphoglycerate (PGA)
C
Triose phosphate
D
Oxaloacetic acid (OAA)
Correct Answer
Option A
Detailed Explanation
In the Calvin cycle, the initial CO2 acceptor during the carboxylation phase is Ribulose-1,5-bisphosphate (RuBP), which combines with CO2 to form two molecules of 3-phosphoglycerate (PGA).
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