C3, C4, and CAM plants

C3 plants get their carbon dioxide directly from air.  Their carbon fixation produces a 3 carbon compound.  When the C3 plant is dry, its stomata closes which results in no photosynthetic activity. Some examples of C3 plants are rice, wheat and soybeans.  C4 plants have a fixation of a 4 carbon compound.  They are not sustainable to oxygen molecules.  Can fix carbon even under very low carbon dioxide levels.  C4 plants are highly adaptable in high temperatures and intense sunlight.  Some examples include corn and sugarcane.  CAM plants fix carbon into a 4 carbon compound and stored in the vacuoles of plant cells.  Its stomata only opens at night and its calvin cycle runs during the day. CAM plants are highly adapted to little to no rain areas.  Some CAM plant examples include cacti, pineapple and other desert-adapted plants.