Explain the physiological mechanisms of gas exchange that occurs between the atmosphere and the leaves of a flowering plant.

1) in the pulp of leaf cells in the light, the process of photosynthesis is carried out, which occurs with the absorption of carbon dioxide and the release of oxygen; 2) living leaf cells breathe, absorbing oxygen and emitting carbon dioxide; 3) a mixture of gases accumulates in the intercellular spaces of the leaf, the connection with the atmosphere is provided by the work of the guard cells of the stomata located in the skin of the leaf.