In an experiment studying photosynthesis performed during the day, you provide a plant with radioactive carbon (¹⁴C)dioxide as a metabolic tracer. The ¹⁴C is incorporated first into oxaloacetate. The plant is best characterized as a
A) C₄ plant.
B) C₃ plant.
C) CAM plant.
D) heterotroph.
E) chemoautotroph.

Question

Quizplus · Accepted Answer

C₄ plants initially fix CO₂ into a four-carbon compound, oxaloacetate, distinguishing them from C₃ plants, which fix CO₂ directly into a three-carbon compound.

In an Experiment Studying Photosynthesis Performed During the Day, You