Answer:
Reactants of photosynthesis are carbondioxide and water while products of photosynthesis are oxygen and glucose.
Reactants of respiration are oxygen and glucose while products of respiration are carbondioxide, water and energy.
Explanation:
Photosynthesis and respiration are opposite to each other. Reactants of photosynthesis are the products of respiration and products of respiration are the reactants of photosynthesis. Photosynthesis is food producing process while respiration is energy releasing process.