How the exchange of gases occur in the tissue i can not understand please explain in the detail
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Gas exchange is a biological process through which different gases are transferred in opposite directions across a specialized respiratory surface. Gases are constantly required by, and produced as a by-product of, cellular and metabolic reactions, so an efficient system for their exchange is extremely important. It is linked with respiration in animals, and both respiration and photosynthesis in plants.
In respiration, oxygen (O
2) is required to enter cells, while waste carbon dioxide (CO
2) must be excreted; the opposite is true for photosynthesis, in which CO
2enters plants and O
2 is released.The exchange of gases essentially occurs as a result of diffusiondown a concentration gradient: gas molecules moving from an area of high concentration to low concentration.
In respiration, oxygen (O
2) is required to enter cells, while waste carbon dioxide (CO
2) must be excreted; the opposite is true for photosynthesis, in which CO
2enters plants and O
2 is released.The exchange of gases essentially occurs as a result of diffusiondown a concentration gradient: gas molecules moving from an area of high concentration to low concentration.
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