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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
Answers. Best Answer: Photosynthesis is the process by which plants take in sunlight, water, and carbon dioxide to produce energy. The substances released from this reaction are oxygen and glucose (sugar). Cellular respiration is basically the other way around. Cellular respiration is used by animals to make energy. In this reaction, animals take in oxygen and glucose, and the substances released from this reaction are carbon dioxide and water. Source(s): brainster Â· 8 years ago.