Question

The graph below refers to an experiment involving a species of alga. The relative concentrations of GP and RuBP present in the cells were monitored when the plants were in light and then in darkness –

Which of the following conclusions CANNOT be drawn from these results?

• A. In darkness the relative concentration of GP increases
• B. During experiment RuBP may be converted into GP
• C. The relative concentration of RuBP decreases on removal of CO₂
• D. In light a steady state exists between RuBP and GP

Answer 1

Answer: (C)

The relative concentration of RuBP decreases on removal of CO₂