How do photosynthesis and respiration relate to each other?

Photosynthesis and respiration are interconnected processes in living organisms. During photosynthesis, plants use sunlight to convert carbon dioxide and water into glucose and oxygen. This glucose is then used in respiration, where it is broken down to release energy for the plant to use, producing carbon dioxide and water as byproducts. In essence, photosynthesis produces the energy source for respiration, and respiration produces the raw materials needed for photosynthesis to occur.