Compared to C₃ Plants, C₄ Plants

Multiple Choice

Compared to C₃ plants, C₄ plants

A) can continue to fix CO₂ even at relatively low CO₂ concentrations and high oxygen concentrations.
B) have higher rates of photorespiration.
C) do not use rubisco for carbon fixation.
D) grow better under cool, moist conditions.
E) make a four-carbon compound, oxaloacetate, which is then delivered to the citric acid cycle in mitochondria.