This page discusses how green plants perform gas exchange without specialized organs. Gas exchange occurs throughout the plant due to low respiration rates and short diffusion distances. Stomata, cont...This page discusses how green plants perform gas exchange without specialized organs. Gas exchange occurs throughout the plant due to low respiration rates and short diffusion distances. Stomata, controlled by guard cells, regulate this process, with potassium uptake opening and abscisic acid closing them in response to water scarcity. Stomatal density adapts to environmental conditions, affecting CO2 levels, while roots and woody stems use lenticels for gas exchange in impermeable structures.
