Final answer:
The photosynthesis equation demonstrates the cyclical relationship between photosynthesis, which produces glucose and oxygen, and cellular respiration, which consumes those inputs to release energy, carbon dioxide, and water.
Step-by-step explanation:
The relationship between photosynthesis and cellular respiration is fundamental to the survival of life on Earth. Photosynthesis uses the energy from sunlight to convert water and carbon dioxide into glucose and oxygen, which are the reactants needed for cellular respiration. In contrast, cellular respiration breaks down glucose in the presence of oxygen to produce ATP, carbon dioxide, and water. This cycle is crucial as it not only recycles matter such as carbon and water but also transfers energy within the ecosystem. Thus, the correct answer to how the photosynthesis equation relates to both photosynthesis and cellular respiration is: a) Photosynthesis produces glucose, while cellular respiration consumes glucose.