Respiration of plants occur in the process of photosynthesis and respiration in mesophyll cells are taking ren Kai (parenchyma) arrangement as there is a gap between the cell width luam space with this contact. Therefore, external gas exchange occurs, cells take ren CAI come. The gas will pass through it more or less depends on close-open your mouth (stomata), which depends on the degree of control-cell (cell guard) one. In the daytime there are open, because the plants stoma photosynthesis. Brown was born in guard cell osmosis water from neighboring cells into cells, cell control, supervise, so open-up the stoma at night there are no photosynthesis. Brown downgraded the osmosis exit the guard cells guard cell punctured stoma so close. In addition, the Exchange will be the shell gas (bark). Small cracks which have 768 cells, called lane (lenticell) at the root (root), the gas exchange by diffusion (diffusion) will air. Log in to the root with a vacuum, water and minerals.
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