Four of the Following are C3 Grasses

Question

Four of the following are C3 grasses.Which one is the exception?  
A) Wheat
B) Oats
C) Barley
D) Rice
E) Legumes

Accepted Answer

C3 grasses make up a group of plants with a specific photosynthetic pathway. Wheat, oats, barley, and rice are all examples of C3 grasses because they use the C3 carbon fixation pathway. Legumes (E) are not C3 grasses because they use the C4 photosynthetic pathway.