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Question
Explain why respiration is said to be a reversal of photosynthesis.
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Solution
- In respiration, the organic food is broken down into its inorganic compounds, i.e., CO2 and H2O, while in photosynthesis, the organic food is synthesised from its inorganic components, i.e., CO2 and H2O.
- In respiration, CO2 is given out, while in photosynthesis CO2 is consumed.
- In respiration, O2 is consumed, while in photosynthesis, O2 is released or evolved.
- In respiration, energy is liberated, while in photosynthesis, energy is absorbed.
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