Oxygen and carbon dioxide.
air
Plants need carbon dioxide in order to perform photosynthesis....they also do need to do this in an aerobic environment (in air, which does contain oxygen).
Carbon dioxide.
Oxygen and Carbon Dioxide.
During the stage of photosynthesis, the exchange of gases occur in the leaves.
Water plants need carbon dioxide and oxygen as gases for their respiration and photosynthesis processes. Carbon dioxide is utilized during photosynthesis to produce glucose, while oxygen is needed for cellular respiration to generate energy for growth and survival.
carbon dioxide
The carbon dioxide helps the plants undergo photosynthesis, which supplies them with the glucose they need.
CO2 is taken in by the plants from the atmosphere and O2 is released during photosynthesis.
Photosynthesis
I assume you are looking for carbon dioxide.
Gases are exchanged in photosynthesis primarily in the stomata, which are tiny openings on the surface of leaves. Through these stomata, carbon dioxide enters the plant while oxygen, a byproduct of photosynthesis, is released into the atmosphere. This gas exchange is crucial for the process of converting light energy into chemical energy.