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Respiration in Plants BIOLOGY 263 Notes MODULE - 2 Forms and Functions of 12.1 RESPIRATION Plants and animals Respiration is the stepwise oxidation of complex organic molecules and release of energy as ATP for various cellular metabolic activities. It involves exchange of gases between the organism and the external environment. The green as well as non-green
Some of the oxygen that is discharged during the photosynthesis process probably gets reabsorbed and used by the cells for respiration. During respiration, living cells, convert glucose to energy and release carbon dioxide as a byproduct. Just like animals, plants give off carbon dioxide. While it is true that there may be periods, such as night time, when some plants give off only carbon dioxide, they generally release more oxygen than they use during a 24 hour period.