Which part of the plant takes in carbon dioxide from the air for photosynthesis?

(ii) Stomata
In plants, the primary part responsible for taking in carbon dioxide (CO2) from the air for photosynthesis is the “leaf.” Specifically, the microscopic openings called “stomata” present on the surface of leaves facilitate the entry of carbon dioxide into the plant. Stomata are tiny pores mainly located on the underside of leaves, allowing for the exchange of gases, including the uptake of carbon dioxide required for the process of photosynthesis.