The role of stomata in plants is crucial for gas exchange, primarily in the process of photosynthesis. Stomata are small openings located on the surface of leaves that allow for the exchange of gases such as carbon dioxide and oxygen between the plant and its environment. During photosynthesis, plants absorb carbon dioxide through stomata while releasing oxygen as a byproduct. Stomata also play a role in transpiration, a process that helps regulate water loss and maintain nutrient uptake in the plant.