Which of the following statements concerning photorespiration is not true?
A) High oxygen concentration and high temperatures promote photorespiration.
B) Photorespiration is a serious problem of C4 plants in hot dry environments.
C) When the rates of carbon dioxide release and fixation are equal, the carbon dioxide compensation point has been reached.
D) Photorespiration is depressed by carbon dioxide concentrations above 0.2%.
E) The lower the value of the carbon dioxide compensation point the less photorespiration takes place.

Question

Quizplus · Accepted Answer

C4 plants have mechanisms that effectively minimize photorespiration, especially in hot and dry environments, by concentrating CO2 around the enzyme Rubisco, thereby reducing the oxygenase activity of Rubisco which leads to photorespiration.

Which of the Following Statements Concerning Photorespiration Is Not True