What important role does gas exchange play in the plant respiration?

Gas exchange is crucial for plant respiration as it allows for the intake of carbon dioxide (CO2) and the release of oxygen (O2) through small openings called stomata. During photosynthesis, plants absorb CO2 to produce glucose, while respiration involves using that glucose to generate energy, releasing O2 as a byproduct. This process not only supports the plant's energy needs but also contributes to the overall balance of gases in the atmosphere, thus playing a vital role in the ecosystem.