Where are the stomata located in C4 plants versus most C3 plants?

Question

Where are the stomata located in C4 plants versus most C3 plants?

Answer 1

C3 plants—all of carbon fixation and photosynthesis happens in mesophyll cells just on the surface of the leaf.  C3 plants include most temperate plants (except many grasses)—more than 95% of all earth’s plants.

C4 plants—carbon fixation and photosynthesis split between the mesophyll cells and bundle sheath cells

Answer 2

C3 plants have the vast majority of the stomata on the lower (abaxial) surface of the leaf.  C4 plants can have them on both surfaces.